56728245 has 16 divisors (see below), whose sum is σ = 103731840. Its totient is φ = 25932864.

The previous prime is 56728237. The next prime is 56728249. The reversal of 56728245 is 54282765.

It is not a de Polignac number, because 56728245 - 2³ = 56728237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56728249) 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, 270030 + ... + 270239.

It is an arithmetic number, because the mean of its divisors is an integer number (6483240).

Almost surely, 2^56728245 is an apocalyptic number.

It is an amenable number.

56728245 is a deficient number, since it is larger than the sum of its proper divisors (47003595).

56728245 is a wasteful number, since it uses less digits than its factorization.

56728245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540284.

The product of its digits is 134400, while the sum is 39.

The square root of 56728245 is about 7531.8155181868. The cubic root of 56728245 is about 384.2375307205.

The spelling of 56728245 in words is "fifty-six million, seven hundred twenty-eight thousand, two hundred forty-five".