56890228 has 36 divisors (see below), whose sum is σ = 109470060. Its totient is φ = 25833472.

The previous prime is 56890213. The next prime is 56890243. The reversal of 56890228 is 82209865.

It is an interprime number because it is at equal distance from previous prime (56890213) and next prime (56890243).

It can be written as a sum of positive squares in 6 ways, for example, as 18301284 + 38588944 = 4278^2 + 6212^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32676 + ... + 34372.

It is an arithmetic number, because the mean of its divisors is an integer number (3040835).

Almost surely, 2^56890228 is an apocalyptic number.

56890228 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

56890228 is a deficient number, since it is larger than the sum of its proper divisors (52579832).

56890228 is a wasteful number, since it uses less digits than its factorization.

56890228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764 (or 1745 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 56890228 is about 7542.5611034979. The cubic root of 56890228 is about 384.6029030985.

The spelling of 56890228 in words is "fifty-six million, eight hundred ninety thousand, two hundred twenty-eight".