56213128 has 16 divisors (see below), whose sum is σ = 107642880. Its totient is φ = 27508368.

The previous prime is 56213123. The next prime is 56213141. The reversal of 56213128 is 82131265.

It is a junction number, because it is equal to n+sod(n) for n = 56213096 and 56213105.

It is not an unprimeable number, because it can be changed into a prime (56213123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74376 + ... + 75127.

It is an arithmetic number, because the mean of its divisors is an integer number (6727680).

Almost surely, 2^56213128 is an apocalyptic number.

It is an amenable number.

56213128 is a deficient number, since it is larger than the sum of its proper divisors (51429752).

56213128 is a wasteful number, since it uses less digits than its factorization.

56213128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149556 (or 149552 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 56213128 is about 7497.5414637066. The cubic root of 56213128 is about 383.0709783080.

The spelling of 56213128 in words is "fifty-six million, two hundred thirteen thousand, one hundred twenty-eight".