87245312 has 80 divisors (see below), whose sum is σ = 217432512. Its totient is φ = 33976320.

The previous prime is 87245303. The next prime is 87245329. The reversal of 87245312 is 21354278.

It is a super-2 number, since 2×87245312² = 15223488931954688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 38318 + ... + 40530.

Almost surely, 2^87245312 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 87245312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108716256).

87245312 is an abundant number, since it is smaller than the sum of its proper divisors (130187200).

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

87245312 is a wasteful number, since it uses less digits than its factorization.

87245312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249 (or 2233 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 87245312 is about 9340.5198998771. The cubic root of 87245312 is about 443.5208422837.

The spelling of 87245312 in words is "eighty-seven million, two hundred forty-five thousand, three hundred twelve".