57030072 has 32 divisors (see below), whose sum is σ = 155537280. Its totient is φ = 17281760.

The previous prime is 57030013. The next prime is 57030073. The reversal of 57030072 is 27003075.

It is a super-2 number, since 2×57030072² = 6504858224650368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57030073) 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, 107748 + ... + 108275.

It is an arithmetic number, because the mean of its divisors is an integer number (4860540).

Almost surely, 2^57030072 is an apocalyptic number.

It is an amenable number.

57030072 is an abundant number, since it is smaller than the sum of its proper divisors (98507208).

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

57030072 is a wasteful number, since it uses less digits than its factorization.

57030072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216043 (or 216039 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 24.

The square root of 57030072 is about 7551.8257395149. The cubic root of 57030072 is about 384.9177808349.

The spelling of 57030072 in words is "fifty-seven million, thirty thousand, seventy-two".