56700390 has 32 divisors (see below), whose sum is σ = 137435616. Its totient is φ = 14969600.

The previous prime is 56700373. The next prime is 56700401. The reversal of 56700390 is 9300765.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6327 + ... + 12386.

It is an arithmetic number, because the mean of its divisors is an integer number (4294863).

Almost surely, 2^56700390 is an apocalyptic number.

56700390 is an abundant number, since it is smaller than the sum of its proper divisors (80735226).

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

56700390 is a wasteful number, since it uses less digits than its factorization.

56700390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18824.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 56700390 is about 7529.9661353820. The cubic root of 56700390 is about 384.1746303159.

The spelling of 56700390 in words is "fifty-six million, seven hundred thousand, three hundred ninety".