11982920 has 32 divisors (see below), whose sum is σ = 28382400. Its totient is φ = 4540608.

The previous prime is 11982913. The next prime is 11982941. The reversal of 11982920 is 2928911.

It is a happy number.

It is a nialpdrome in base 8.

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 7 ways as a sum of consecutive naturals, for example, 7124 + ... + 8643.

It is an arithmetic number, because the mean of its divisors is an integer number (886950).

Almost surely, 2^11982920 is an apocalyptic number.

11982920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11982920 is an abundant number, since it is smaller than the sum of its proper divisors (16399480).

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

11982920 is a wasteful number, since it uses less digits than its factorization.

11982920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15797 (or 15793 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 11982920 is about 3461.6354516327. The cubic root of 11982920 is about 228.8341762728.

The spelling of 11982920 in words is "eleven million, nine hundred eighty-two thousand, nine hundred twenty".