57706272 has 72 divisors (see below), whose sum is σ = 176736924. Its totient is φ = 17754624.

The previous prime is 57706237. The next prime is 57706289. The reversal of 57706272 is 27260775.

It can be written as a sum of positive squares in 2 ways, for example, as 57699216 + 7056 = 7596^2 + 84^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 3963 + ... + 11450.

Almost surely, 2^57706272 is an apocalyptic number.

57706272 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

57706272 is an abundant number, since it is smaller than the sum of its proper divisors (119030652).

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

57706272 is a wasteful number, since it uses less digits than its factorization.

57706272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15442 (or 15431 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The square root of 57706272 is about 7596.4644407777. The cubic root of 57706272 is about 386.4331183115.

The spelling of 57706272 in words is "fifty-seven million, seven hundred six thousand, two hundred seventy-two".