87257912 has 16 divisors (see below), whose sum is σ = 186981360. Its totient is φ = 37396224.

The previous prime is 87257869. The next prime is 87257927. The reversal of 87257912 is 21975278.

It is a super-2 number, since 2×87257912² = 15227886413199488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87257912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 779033 + ... + 779144.

It is an arithmetic number, because the mean of its divisors is an integer number (11686335).

Almost surely, 2^87257912 is an apocalyptic number.

It is an amenable number.

87257912 is an abundant number, since it is smaller than the sum of its proper divisors (99723448).

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

87257912 is a wasteful number, since it uses less digits than its factorization.

87257912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558190 (or 1558186 counting only the distinct ones).

The product of its digits is 70560, while the sum is 41.

The square root of 87257912 is about 9341.1943561838. The cubic root of 87257912 is about 443.5421924036.

The spelling of 87257912 in words is "eighty-seven million, two hundred fifty-seven thousand, nine hundred twelve".