57276220 has 24 divisors (see below), whose sum is σ = 124161408. Its totient is φ = 22171200.

The previous prime is 57276209. The next prime is 57276227. The reversal of 57276220 is 2267275.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57276227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45571 + ... + 46810.

It is an arithmetic number, because the mean of its divisors is an integer number (5173392).

Almost surely, 2^57276220 is an apocalyptic number.

It is an amenable number.

57276220 is an abundant number, since it is smaller than the sum of its proper divisors (66885188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57276220 is a wasteful number, since it uses less digits than its factorization.

57276220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92421 (or 92419 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 57276220 is about 7568.1054432401. The cubic root of 57276220 is about 385.4707683618.

The spelling of 57276220 in words is "fifty-seven million, two hundred seventy-six thousand, two hundred twenty".