11991952 has 20 divisors (see below), whose sum is σ = 26553856. Its totient is φ = 5139360.

The previous prime is 11991943. The next prime is 11991977. The reversal of 11991952 is 25919911.

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, 53424 + ... + 53647.

Almost surely, 2^11991952 is an apocalyptic number.

It is an amenable number.

11991952 is an abundant number, since it is smaller than the sum of its proper divisors (14561904).

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

11991952 is a wasteful number, since it uses less digits than its factorization.

11991952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107086 (or 107080 counting only the distinct ones).

The product of its digits is 7290, while the sum is 37.

The square root of 11991952 is about 3462.9397915644. The cubic root of 11991952 is about 228.8916556188.

The spelling of 11991952 in words is "eleven million, nine hundred ninety-one thousand, nine hundred fifty-two".