57999940 has 12 divisors (see below), whose sum is σ = 121799916. Its totient is φ = 23199968.

The previous prime is 57999923. The next prime is 57999941. The reversal of 57999940 is 4999975.

It can be written as a sum of positive squares in 2 ways, for example, as 14122564 + 43877376 = 3758^2 + 6624^2 .

It is not an unprimeable number, because it can be changed into a prime (57999941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1449979 + ... + 1450018.

It is an arithmetic number, because the mean of its divisors is an integer number (10149993).

Almost surely, 2^57999940 is an apocalyptic number.

It is an amenable number.

57999940 is an abundant number, since it is smaller than the sum of its proper divisors (63799976).

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

57999940 is a wasteful number, since it uses less digits than its factorization.

57999940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2900006 (or 2900004 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 52.

The square root of 57999940 is about 7615.7691666699. The cubic root of 57999940 is about 387.0875305842.

The spelling of 57999940 in words is "fifty-seven million, nine hundred ninety-nine thousand, nine hundred forty".