56705280 has 72 divisors (see below), whose sum is σ = 181114752. Its totient is φ = 15120384.

The previous prime is 56705279. The next prime is 56705287. The reversal of 56705280 is 8250765.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (56705287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3544 + ... + 11223.

Almost surely, 2^56705280 is an apocalyptic number.

It is an amenable number.

56705280 is an abundant number, since it is smaller than the sum of its proper divisors (124409472).

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

56705280 is a wasteful number, since it uses less digits than its factorization.

56705280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14791 (or 14777 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 56705280 is about 7530.2908310370. The cubic root of 56705280 is about 384.1856740961.

The spelling of 56705280 in words is "fifty-six million, seven hundred five thousand, two hundred eighty".