11921976 has 48 divisors (see below), whose sum is σ = 35226360. Its totient is φ = 3612480.

The previous prime is 11921957. The next prime is 11921977. The reversal of 11921976 is 67912911.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 11921976.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11921977) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 6735 + ... + 8318.

Almost surely, 2^11921976 is an apocalyptic number.

It is an amenable number.

11921976 is an abundant number, since it is smaller than the sum of its proper divisors (23304384).

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

11921976 is a wasteful number, since it uses less digits than its factorization.

11921976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15076 (or 15069 counting only the distinct ones).

The product of its digits is 6804, while the sum is 36.

The square root of 11921976 is about 3452.8214549843. The cubic root of 11921976 is about 228.4455737211.

The spelling of 11921976 in words is "eleven million, nine hundred twenty-one thousand, nine hundred seventy-six".