56400380 has 12 divisors (see below), whose sum is σ = 118440840. Its totient is φ = 22560144.

The previous prime is 56400371. The next prime is 56400397. The reversal of 56400380 is 8300465.

It is a congruent number.

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, 1409990 + ... + 1410029.

It is an arithmetic number, because the mean of its divisors is an integer number (9870070).

Almost surely, 2^56400380 is an apocalyptic number.

It is an amenable number.

56400380 is an abundant number, since it is smaller than the sum of its proper divisors (62040460).

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

56400380 is a wasteful number, since it uses less digits than its factorization.

56400380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820028 (or 2820026 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 56400380 is about 7510.0186417878. The cubic root of 56400380 is about 383.4958571502.

The spelling of 56400380 in words is "fifty-six million, four hundred thousand, three hundred eighty".