15996929 has 8 divisors (see below), whose sum is σ = 17648232. Its totient is φ = 14405760.

The previous prime is 15996923. The next prime is 15996941. The reversal of 15996929 is 92969951.

It can be written as a sum of positive squares in 4 ways, for example, as 3323329 + 12673600 = 1823^2 + 3560^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15996929 - 2¹⁶ = 15931393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15996923) 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, 14474 + ... + 15539.

It is an arithmetic number, because the mean of its divisors is an integer number (2206029).

Almost surely, 2^15996929 is an apocalyptic number.

It is an amenable number.

15996929 is a deficient number, since it is larger than the sum of its proper divisors (1651303).

15996929 is a wasteful number, since it uses less digits than its factorization.

15996929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30067.

The product of its digits is 393660, while the sum is 50.

The square root of 15996929 is about 3999.6161065782. The cubic root of 15996929 is about 251.9680872076.

The spelling of 15996929 in words is "fifteen million, nine hundred ninety-six thousand, nine hundred twenty-nine".