56728410 has 32 divisors (see below), whose sum is σ = 136503360. Its totient is φ = 15088128.

The previous prime is 56728403. The next prime is 56728417. The reversal of 56728410 is 1482765.

It is an interprime number because it is at equal distance from previous prime (56728403) and next prime (56728417).

It is a super-2 number, since 2×56728410² = 6436225002256200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56728417) 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, 10314 + ... + 14826.

It is an arithmetic number, because the mean of its divisors is an integer number (4265730).

Almost surely, 2^56728410 is an apocalyptic number.

56728410 is an abundant number, since it is smaller than the sum of its proper divisors (79774950).

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

56728410 is a wasteful number, since it uses less digits than its factorization.

56728410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4942.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 56728410 is about 7531.8264717132. The cubic root of 56728410 is about 384.2379032518.

The spelling of 56728410 in words is "fifty-six million, seven hundred twenty-eight thousand, four hundred ten".