57130272 has 168 divisors, whose sum is σ = 176279040. Its totient is φ = 18195840.

The previous prime is 57130267. The next prime is 57130291. The reversal of 57130272 is 27203175.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 723129 + ... + 723207.

It is an arithmetic number, because the mean of its divisors is an integer number (1049280).

Almost surely, 2^57130272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57130272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88139520).

57130272 is an abundant number, since it is smaller than the sum of its proper divisors (119148768).

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

57130272 is an equidigital number, since it uses as much as digits as its factorization.

57130272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 57130272 is about 7558.4569853906. The cubic root of 57130272 is about 385.1430783215.

The spelling of 57130272 in words is "fifty-seven million, one hundred thirty thousand, two hundred seventy-two".