11591972 has 24 divisors (see below), whose sum is σ = 23419200. Its totient is φ = 4917600.

The previous prime is 11591953. The next prime is 11592043. The reversal of 11591972 is 27919511.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779 + ... + 4877.

It is an arithmetic number, because the mean of its divisors is an integer number (975800).

Almost surely, 2^11591972 is an apocalyptic number.

It is an amenable number.

11591972 is an abundant number, since it is smaller than the sum of its proper divisors (11827228).

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

11591972 is a wasteful number, since it uses less digits than its factorization.

11591972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4211 (or 4209 counting only the distinct ones).

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

The square root of 11591972 is about 3404.6985182245. The cubic root of 11591972 is about 226.3180058686.

The spelling of 11591972 in words is "eleven million, five hundred ninety-one thousand, nine hundred seventy-two".