15312996 has 48 divisors (see below), whose sum is σ = 40279680. Its totient is φ = 5029920.

The previous prime is 15312989. The next prime is 15313019. The reversal of 15312996 is 69921351.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 15312996.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6670 + ... + 8666.

It is an arithmetic number, because the mean of its divisors is an integer number (839160).

Almost surely, 2^15312996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15312996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20139840).

15312996 is an abundant number, since it is smaller than the sum of its proper divisors (24966684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15312996 is a wasteful number, since it uses less digits than its factorization.

15312996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081 (or 2073 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 15312996 is about 3913.1823366667. The cubic root of 15312996 is about 248.3247782688.

The spelling of 15312996 in words is "fifteen million, three hundred twelve thousand, nine hundred ninety-six".