15972996 has 96 divisors (see below), whose sum is σ = 44876160. Its totient is φ = 4368384.

The previous prime is 15972991. The next prime is 15973003. The reversal of 15972996 is 69927951.

It is not an unprimeable number, because it can be changed into a prime (15972991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50230 + ... + 50546.

It is an arithmetic number, because the mean of its divisors is an integer number (467460).

Almost surely, 2^15972996 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 15972996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22438080).

15972996 is an abundant number, since it is smaller than the sum of its proper divisors (28903164).

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

15972996 is a wasteful number, since it uses less digits than its factorization.

15972996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373 (or 371 counting only the distinct ones).

The product of its digits is 306180, while the sum is 48.

The square root of 15972996 is about 3996.6230745468. The cubic root of 15972996 is about 251.8423680343.

The spelling of 15972996 in words is "fifteen million, nine hundred seventy-two thousand, nine hundred ninety-six".