56238890 has 32 divisors (see below), whose sum is σ = 110093904. Its totient is φ = 20597760.

The previous prime is 56238869. The next prime is 56238899. The reversal of 56238890 is 9883265.

It can be written as a sum of positive squares in 8 ways, for example, as 47706649 + 8532241 = 6907^2 + 2921^2 .

It is not an unprimeable number, because it can be changed into a prime (56238899) 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, 1820 + ... + 10760.

Almost surely, 2^56238890 is an apocalyptic number.

56238890 is a deficient number, since it is larger than the sum of its proper divisors (53855014).

56238890 is a wasteful number, since it uses less digits than its factorization.

56238890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9002.

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

The square root of 56238890 is about 7499.2592967572. The cubic root of 56238890 is about 383.1294887646.

The spelling of 56238890 in words is "fifty-six million, two hundred thirty-eight thousand, eight hundred ninety".