56231428 has 24 divisors (see below), whose sum is σ = 107652384. Its totient is φ = 25488000.

The previous prime is 56231423. The next prime is 56231429. The reversal of 56231428 is 82413265.

It is a self number, because there is not a number n which added to its sum of digits gives 56231428.

It is not an unprimeable number, because it can be changed into a prime (56231423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16051 + ... + 19237.

It is an arithmetic number, because the mean of its divisors is an integer number (4485516).

Almost surely, 2^56231428 is an apocalyptic number.

It is an amenable number.

56231428 is a deficient number, since it is larger than the sum of its proper divisors (51420956).

56231428 is a wasteful number, since it uses less digits than its factorization.

56231428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3603 (or 3601 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 56231428 is about 7498.7617644515. The cubic root of 56231428 is about 383.1125429660.

The spelling of 56231428 in words is "fifty-six million, two hundred thirty-one thousand, four hundred twenty-eight".