15972396 has 48 divisors (see below), whose sum is σ = 42432768. Its totient is φ = 4628800.

The previous prime is 15972391. The next prime is 15972449. The reversal of 15972396 is 69327951.

It is not an unprimeable number, because it can be changed into a prime (15972391) 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 15 ways as a sum of consecutive naturals, for example, 406 + ... + 5666.

It is an arithmetic number, because the mean of its divisors is an integer number (884016).

Almost surely, 2^15972396 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 15972396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21216384).

15972396 is an abundant number, since it is smaller than the sum of its proper divisors (26460372).

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

15972396 is a wasteful number, since it uses less digits than its factorization.

15972396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5302 (or 5300 counting only the distinct ones).

The product of its digits is 102060, while the sum is 42.

The square root of 15972396 is about 3996.5480104710. The cubic root of 15972396 is about 251.8392146432.

It can be divided in two parts, 1597 and 2396, that added together give a palindrome (3993).

The spelling of 15972396 in words is "fifteen million, nine hundred seventy-two thousand, three hundred ninety-six".