11931772 has 18 divisors (see below), whose sum is σ = 22040088. Its totient is φ = 5651208.

The previous prime is 11931767. The next prime is 11931809. The reversal of 11931772 is 27713911.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2688 + ... + 5575.

Almost surely, 2^11931772 is an apocalyptic number.

It is an amenable number.

11931772 is a deficient number, since it is larger than the sum of its proper divisors (10108316).

11931772 is a wasteful number, since it uses less digits than its factorization.

11931772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8305 (or 8284 counting only the distinct ones).

The product of its digits is 2646, while the sum is 31.

The square root of 11931772 is about 3454.2397137431. The cubic root of 11931772 is about 228.5081259968.

The spelling of 11931772 in words is "eleven million, nine hundred thirty-one thousand, seven hundred seventy-two".