57272280 has 64 divisors (see below), whose sum is σ = 185038560. Its totient is φ = 14097408.

The previous prime is 57272279. The next prime is 57272291. The reversal of 57272280 is 8227275.

It is a super-2 number, since 2×57272280² = 6560228112796800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16797 + ... + 19916.

Almost surely, 2^57272280 is an apocalyptic number.

It is an amenable number.

57272280 is an abundant number, since it is smaller than the sum of its proper divisors (127766280).

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

57272280 is a wasteful number, since it uses less digits than its factorization.

57272280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36740 (or 36736 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 57272280 is about 7567.8451358362. The cubic root of 57272280 is about 385.4619293843.

The spelling of 57272280 in words is "fifty-seven million, two hundred seventy-two thousand, two hundred eighty".