56309828 has 6 divisors (see below), whose sum is σ = 98542206. Its totient is φ = 28154912.

The previous prime is 56309789. The next prime is 56309837. The reversal of 56309828 is 82890365.

It can be written as a sum of positive squares in only one way, i.e., 52301824 + 4008004 = 7232^2 + 2002^2 .

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7038725 + ... + 7038732.

It is an arithmetic number, because the mean of its divisors is an integer number (16423701).

Almost surely, 2^56309828 is an apocalyptic number.

It is an amenable number.

56309828 is a deficient number, since it is larger than the sum of its proper divisors (42232378).

56309828 is a wasteful number, since it uses less digits than its factorization.

56309828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14077461 (or 14077459 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 56309828 is about 7503.9874733371. The cubic root of 56309828 is about 383.2905103182.

The spelling of 56309828 in words is "fifty-six million, three hundred nine thousand, eight hundred twenty-eight".