57320030 has 48 divisors (see below), whose sum is σ = 109408320. Its totient is φ = 21610368.

The previous prime is 57320027. The next prime is 57320033. The reversal of 57320030 is 3002375.

It is an interprime number because it is at equal distance from previous prime (57320027) and next prime (57320033).

It is a junction number, because it is equal to n+sod(n) for n = 57319984 and 57320011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57320033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 725531 + ... + 725609.

It is an arithmetic number, because the mean of its divisors is an integer number (2279340).

Almost surely, 2^57320030 is an apocalyptic number.

57320030 is a deficient number, since it is larger than the sum of its proper divisors (52088290).

57320030 is a wasteful number, since it uses less digits than its factorization.

57320030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 20.

The square root of 57320030 is about 7570.9992735438. Note that the first 3 decimals coincide. The cubic root of 57320030 is about 385.5690242086.

The spelling of 57320030 in words is "fifty-seven million, three hundred twenty thousand, thirty".