56785280 has 64 divisors (see below), whose sum is σ = 137516400. Its totient is φ = 22419456.

The previous prime is 56785231. The next prime is 56785283. The reversal of 56785280 is 8258765.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56785283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52586 + ... + 53654.

Almost surely, 2^56785280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56785280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68758200).

56785280 is an abundant number, since it is smaller than the sum of its proper divisors (80731120).

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

56785280 is a wasteful number, since it uses less digits than its factorization.

56785280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171 (or 1159 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 56785280 is about 7535.6008386857. The cubic root of 56785280 is about 384.3662593469.

The spelling of 56785280 in words is "fifty-six million, seven hundred eighty-five thousand, two hundred eighty".