57798018 has 12 divisors (see below), whose sum is σ = 125229078. Its totient is φ = 19266000.

The previous prime is 57798017. The next prime is 57798023. The reversal of 57798018 is 81089775.

It can be written as a sum of positive squares in only one way, i.e., 54863649 + 2934369 = 7407^2 + 1713^2 .

It is a super-2 number, since 2×57798018² = 6681221769456648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57798017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1605483 + ... + 1605518.

Almost surely, 2^57798018 is an apocalyptic number.

57798018 is an abundant number, since it is smaller than the sum of its proper divisors (67431060).

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

57798018 is a wasteful number, since it uses less digits than its factorization.

57798018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3211009 (or 3211006 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 45.

The square root of 57798018 is about 7602.5007727721. The cubic root of 57798018 is about 386.6378038636.

The spelling of 57798018 in words is "fifty-seven million, seven hundred ninety-eight thousand, eighteen".