57072330 has 64 divisors (see below), whose sum is σ = 173940480. Its totient is φ = 13044672.

The previous prime is 57072317. The next prime is 57072359. The reversal of 57072330 is 3327075.

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

It is a junction number, because it is equal to n+sod(n) for n = 57072294 and 57072303.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13209 + ... + 16988.

It is an arithmetic number, because the mean of its divisors is an integer number (2717820).

Almost surely, 2^57072330 is an apocalyptic number.

57072330 is an abundant number, since it is smaller than the sum of its proper divisors (116868150).

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

57072330 is a wasteful number, since it uses less digits than its factorization.

57072330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30220 (or 30214 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 27.

The square root of 57072330 is about 7554.6230878847. The cubic root of 57072330 is about 385.0128291671.

It can be divided in two parts, 570 and 72330, that added together give a square (72900 = 270²).

The spelling of 57072330 in words is "fifty-seven million, seventy-two thousand, three hundred thirty".