56390228 has 12 divisors (see below), whose sum is σ = 98736372. Its totient is φ = 28179840.

The previous prime is 56390221. The next prime is 56390249. The reversal of 56390228 is 82209365.

56390228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 110224 + 56280004 = 332^2 + 7502^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56390221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10226 + ... + 14742.

It is an arithmetic number, because the mean of its divisors is an integer number (8228031).

Almost surely, 2^56390228 is an apocalyptic number.

It is an amenable number.

56390228 is a deficient number, since it is larger than the sum of its proper divisors (42346144).

56390228 is a wasteful number, since it uses less digits than its factorization.

56390228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7642 (or 7640 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 56390228 is about 7509.3427142460. The cubic root of 56390228 is about 383.4728461730.

The spelling of 56390228 in words is "fifty-six million, three hundred ninety thousand, two hundred twenty-eight".