56728750 has 40 divisors (see below), whose sum is σ = 114544584. Its totient is φ = 20940000.

The previous prime is 56728717. The next prime is 56728751. The reversal of 56728750 is 5782765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56728751) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14505 + ... + 17995.

Almost surely, 2^56728750 is an apocalyptic number.

56728750 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

56728750 is an abundant number, since it is smaller than the sum of its proper divisors (57815834).

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

56728750 is a wasteful number, since it uses less digits than its factorization.

56728750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3526 (or 3511 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 56728750 is about 7531.8490425658. The cubic root of 56728750 is about 384.2386708897.

The spelling of 56728750 in words is "fifty-six million, seven hundred twenty-eight thousand, seven hundred fifty".