15797938 has 16 divisors (see below), whose sum is σ = 25585560. Its totient is φ = 7272576.

The previous prime is 15797923. The next prime is 15797939. The reversal of 15797938 is 83979751.

15797938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11648569 + 4149369 = 3413^2 + 2037^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15797891 and 15797900.

It is not an unprimeable number, because it can be changed into a prime (15797939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18006 + ... + 18862.

Almost surely, 2^15797938 is an apocalyptic number.

15797938 is a deficient number, since it is larger than the sum of its proper divisors (9787622).

15797938 is a wasteful number, since it uses less digits than its factorization.

15797938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581.

The product of its digits is 476280, while the sum is 49.

The square root of 15797938 is about 3974.6619982081. The cubic root of 15797938 is about 250.9189539557.

The spelling of 15797938 in words is "fifteen million, seven hundred ninety-seven thousand, nine hundred thirty-eight".