11915972 has 12 divisors (see below), whose sum is σ = 20900880. Its totient is φ = 5944296.

The previous prime is 11915933. The next prime is 11915999. The reversal of 11915972 is 27951911.

11915972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1322 + ... + 5057.

It is an arithmetic number, because the mean of its divisors is an integer number (1741740).

Almost surely, 2^11915972 is an apocalyptic number.

It is an amenable number.

11915972 is a deficient number, since it is larger than the sum of its proper divisors (8984908).

11915972 is a wasteful number, since it uses less digits than its factorization.

11915972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6850 (or 6848 counting only the distinct ones).

The product of its digits is 5670, while the sum is 35.

The square root of 11915972 is about 3451.9519116002. The cubic root of 11915972 is about 228.4072182914.

The spelling of 11915972 in words is "eleven million, nine hundred fifteen thousand, nine hundred seventy-two".