56820830 has 64 divisors (see below), whose sum is σ = 121374720. Its totient is φ = 18921600.

The previous prime is 56820821. The next prime is 56820839. The reversal of 56820830 is 3802865.

It is an interprime number because it is at equal distance from previous prime (56820821) and next prime (56820839).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56820839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64352 + ... + 65228.

It is an arithmetic number, because the mean of its divisors is an integer number (1896480).

Almost surely, 2^56820830 is an apocalyptic number.

56820830 is an abundant number, since it is smaller than the sum of its proper divisors (64553890).

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

56820830 is a wasteful number, since it uses less digits than its factorization.

56820830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 56820830 is about 7537.9592729067. The cubic root of 56820830 is about 384.4464524888.

The spelling of 56820830 in words is "fifty-six million, eight hundred twenty thousand, eight hundred thirty".