56380830 has 32 divisors (see below), whose sum is σ = 147616128. Its totient is φ = 13668000.

The previous prime is 56380829. The next prime is 56380837. The reversal of 56380830 is 3808365.

56380830 = 3356² + 3357² + ... + 3360².

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 56380791 and 56380800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56380837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85096 + ... + 85755.

It is an arithmetic number, because the mean of its divisors is an integer number (4613004).

Almost surely, 2^56380830 is an apocalyptic number.

56380830 is an abundant number, since it is smaller than the sum of its proper divisors (91235298).

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

56380830 is a wasteful number, since it uses less digits than its factorization.

56380830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170872.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 56380830 is about 7508.7169343371. The cubic root of 56380830 is about 383.4515417842.

The spelling of 56380830 in words is "fifty-six million, three hundred eighty thousand, eight hundred thirty".