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38 is the sum of the squares of the first three primes. 37 and 38 are the first pair of consecutive positive integers not divisible by any of their digits. 38 is the largest even number which cannot be written as the sum of two odd composite numbers. The sum of each row of the only non-trivial (order 3) magic hexagon is 38.
Natural stable strontium, on the other hand, is not hazardous to health.'Strontium is a chemical element; it has symbol Sr and atomic number 38. An alkaline earth metal, strontium is a soft silver-white yellowish metallic element that is highly chemically reactive. The metal forms a dark oxide layer when it is exposed to air.
In mathematics. 37 is the 12th prime number, and the 3rd isolated prime without a twin prime. [1] 37 is the third star number [2] and the fourth centered hexagonal number. [3] The sum of the squares of the first 37 primes is divisible by 37. [4] 37 is the median value for the second prime factor of an integer. [5]
It is a perfect totient number. [3] 39 is the sum of five consecutive primes (3 + 5 + 7 + 11 + 13) and also is the product of the first and the last of those consecutive primes. Among small semiprimes only three other integers (10, 155, and 371) share this attribute. 39 also is the sum of the first three powers of 3 (3 1 + 3 2 + 3 3).
The number eight is considered to be a lucky number in Chinese and other Asian cultures. [64] Eight (八; accounting 捌; pinyin bā) is considered a lucky number in Chinese culture because it sounds like the word meaning to generate wealth (發(T) 发(S); Pinyin: fā). Property with the number 8 may be valued greatly by Chinese.
32 is the fifth power of two ( ), making it the first non-unitary fifth-power of the form where is prime. 32 is the totient summatory function over the first 10 integers, 1 and the smallest number with exactly 7 solutions for . The aliquot sum of a power of two is always one less than the number itself, therefore the aliquot sum of 32 is 31. [ 2 ]
In mathematics. The number 28 depicted as 28 balls arranged in a triangular pattern with the number of layers of 7. 28 as the sum of four nonzero squares. It is a composite number; a square-prime, of the form (p2,q) where q is a higher prime. It is the third of this form and of the specific form (2 2.q), with proper divisors being 1, 2, 4, 7 ...
2. .._. _ _. 2 (two) is a number, numeral and digit. It is the natural number following 1 and preceding 3. It is the smallest and the only even prime number. Because it forms the basis of a duality, it has religious and spiritual significance in many cultures.