57999140 has 48 divisors (see below), whose sum is σ = 126819840. Its totient is φ = 22256640.

The previous prime is 57999107. The next prime is 57999143. The reversal of 57999140 is 4199975.

It is a junction number, because it is equal to n+sod(n) for n = 57999091 and 57999100.

It is not an unprimeable number, because it can be changed into a prime (57999143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85844 + ... + 86516.

It is an arithmetic number, because the mean of its divisors is an integer number (2642080).

Almost surely, 2^57999140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57999140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63409920).

57999140 is an abundant number, since it is smaller than the sum of its proper divisors (68820700).

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

57999140 is a wasteful number, since it uses less digits than its factorization.

57999140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 57999140 is about 7615.7166438885. The cubic root of 57999140 is about 387.0857508614.

The spelling of 57999140 in words is "fifty-seven million, nine hundred ninety-nine thousand, one hundred forty".