87115392 has 256 divisors, whose sum is σ = 317587200. Its totient is φ = 22892544.

The previous prime is 87115387. The next prime is 87115397. The reversal of 87115392 is 29351178.

It is an interprime number because it is at equal distance from previous prime (87115387) and next prime (87115397).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87115397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 314358 + ... + 314634.

It is an arithmetic number, because the mean of its divisors is an integer number (1240575).

Almost surely, 2^87115392 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 87115392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158793600).

87115392 is an abundant number, since it is smaller than the sum of its proper divisors (230471808).

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

87115392 is a wasteful number, since it uses less digits than its factorization.

87115392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320 (or 302 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 87115392 is about 9333.5626638492. The cubic root of 87115392 is about 443.3005788578.

The spelling of 87115392 in words is "eighty-seven million, one hundred fifteen thousand, three hundred ninety-two".