57990018 has 16 divisors (see below), whose sum is σ = 117007776. Its totient is φ = 19158720.

The previous prime is 57990013. The next prime is 57990073. The reversal of 57990018 is 81009975.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (57990011) 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, 42088 + ... + 43443.

It is an arithmetic number, because the mean of its divisors is an integer number (7312986).

Almost surely, 2^57990018 is an apocalyptic number.

57990018 is an abundant number, since it is smaller than the sum of its proper divisors (59017758).

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

57990018 is a wasteful number, since it uses less digits than its factorization.

57990018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85649.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 57990018 is about 7615.1177272581. The cubic root of 57990018 is about 387.0654564148.

The spelling of 57990018 in words is "fifty-seven million, nine hundred ninety thousand, eighteen".