90512856 has 64 divisors (see below), whose sum is σ = 287347200. Its totient is φ = 25860384.

The previous prime is 90512833. The next prime is 90512861. The reversal of 90512856 is 65821509.

It is a happy number.

90512856 is a `hidden beast` number, since 90 + 512 + 8 + 56 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 90512856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28420 + ... + 31443.

It is an arithmetic number, because the mean of its divisors is an integer number (4489800).

Almost surely, 2^90512856 is an apocalyptic number.

It is an amenable number.

90512856 is an abundant number, since it is smaller than the sum of its proper divisors (196834344).

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

90512856 is a wasteful number, since it uses less digits than its factorization.

90512856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59885 (or 59875 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 90512856 is about 9513.8244675840. The cubic root of 90512856 is about 448.9900907696.

The spelling of 90512856 in words is "ninety million, five hundred twelve thousand, eight hundred fifty-six".