87557912 has 32 divisors (see below), whose sum is σ = 179054400. Its totient is φ = 39896064.

The previous prime is 87557881. The next prime is 87557927. The reversal of 87557912 is 21975578.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2888 + ... + 13544.

It is an arithmetic number, because the mean of its divisors is an integer number (5595450).

Almost surely, 2^87557912 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 87557912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89527200).

87557912 is an abundant number, since it is smaller than the sum of its proper divisors (91496488).

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

87557912 is a wasteful number, since it uses less digits than its factorization.

87557912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10755 (or 10751 counting only the distinct ones).

The product of its digits is 176400, while the sum is 44.

The square root of 87557912 is about 9357.2384815179. The cubic root of 87557912 is about 444.0499226932.

The spelling of 87557912 in words is "eighty-seven million, five hundred fifty-seven thousand, nine hundred twelve".