57915690 has 64 divisors (see below), whose sum is σ = 160911360. Its totient is φ = 13066560.

The previous prime is 57915677. The next prime is 57915701. The reversal of 57915690 is 9651975.

It is a super-2 number, since 2×57915690² = 6708454296352200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14845 + ... + 18335.

It is an arithmetic number, because the mean of its divisors is an integer number (2514240).

Almost surely, 2^57915690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57915690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80455680).

57915690 is an abundant number, since it is smaller than the sum of its proper divisors (102995670).

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

57915690 is a wasteful number, since it uses less digits than its factorization.

57915690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3587.

The product of its (nonzero) digits is 85050, while the sum is 42.

The square root of 57915690 is about 7610.2358701948. The cubic root of 57915690 is about 386.9000135634.

The spelling of 57915690 in words is "fifty-seven million, nine hundred fifteen thousand, six hundred ninety".