56990980 has 24 divisors (see below), whose sum is σ = 119972160. Its totient is φ = 22740960.

The previous prime is 56990963. The next prime is 56990981. The reversal of 56990980 is 8909965.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 56990980.

It is not an unprimeable number, because it can be changed into a prime (56990981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5535 + ... + 12025.

It is an arithmetic number, because the mean of its divisors is an integer number (4998840).

Almost surely, 2^56990980 is an apocalyptic number.

It is an amenable number.

56990980 is an abundant number, since it is smaller than the sum of its proper divisors (62981180).

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

56990980 is a wasteful number, since it uses less digits than its factorization.

56990980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6939 (or 6937 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 56990980 is about 7549.2370475433. The cubic root of 56990980 is about 384.8298117760.

It can be divided in two parts, 56990 and 980, that added together give a triangular number (57970 = T₃₄₀).

The spelling of 56990980 in words is "fifty-six million, nine hundred ninety thousand, nine hundred eighty".