57228658 has 16 divisors (see below), whose sum is σ = 90483480. Its totient is φ = 27104896.

The previous prime is 57228641. The next prime is 57228659. The reversal of 57228658 is 85682275.

It can be written as a sum of positive squares in 4 ways, for example, as 57108249 + 120409 = 7557^2 + 347^2 .

It is not an unprimeable number, because it can be changed into a prime (57228659) 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, 6235 + ... + 12382.

Almost surely, 2^57228658 is an apocalyptic number.

57228658 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

57228658 is a deficient number, since it is larger than the sum of its proper divisors (33254822).

57228658 is a wasteful number, since it uses less digits than its factorization.

57228658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18701.

The product of its digits is 268800, while the sum is 43.

The square root of 57228658 is about 7564.9625246924. The cubic root of 57228658 is about 385.3640408939.

The spelling of 57228658 in words is "fifty-seven million, two hundred twenty-eight thousand, six hundred fifty-eight".