56396920 has 64 divisors (see below), whose sum is σ = 134784000. Its totient is φ = 21191808.

The previous prime is 56396911. The next prime is 56396957. The reversal of 56396920 is 2969365.

56396920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×56396920² = 6361225170972800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 53761 + ... + 54799.

It is an arithmetic number, because the mean of its divisors is an integer number (2106000).

Almost surely, 2^56396920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56396920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67392000).

56396920 is an abundant number, since it is smaller than the sum of its proper divisors (78387080).

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

56396920 is a wasteful number, since it uses less digits than its factorization.

56396920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132 (or 1128 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 56396920 is about 7509.7882793059. The cubic root of 56396920 is about 383.4880148697.

The spelling of 56396920 in words is "fifty-six million, three hundred ninety-six thousand, nine hundred twenty".