15691952 has 40 divisors (see below), whose sum is σ = 33247872. Its totient is φ = 7142400.

The previous prime is 15691943. The next prime is 15691997. The reversal of 15691952 is 25919651.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7502 + ... + 9362.

Almost surely, 2^15691952 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 15691952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16623936).

15691952 is an abundant number, since it is smaller than the sum of its proper divisors (17555920).

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

15691952 is a wasteful number, since it uses less digits than its factorization.

15691952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917 (or 1911 counting only the distinct ones).

The product of its digits is 24300, while the sum is 38.

The square root of 15691952 is about 3961.3068550669. The cubic root of 15691952 is about 250.3565685271.

The spelling of 15691952 in words is "fifteen million, six hundred ninety-one thousand, nine hundred fifty-two".