90415624 has 16 divisors (see below), whose sum is σ = 182570220. Its totient is φ = 41730240.

The previous prime is 90415621. The next prime is 90415631. The reversal of 90415624 is 42651409.

It can be written as a sum of positive squares in 2 ways, for example, as 72080100 + 18335524 = 8490^2 + 4282^2 .

It is not an unprimeable number, because it can be changed into a prime (90415621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434587 + ... + 434794.

Almost surely, 2^90415624 is an apocalyptic number.

It is an amenable number.

90415624 is an abundant number, since it is smaller than the sum of its proper divisors (92154596).

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

90415624 is a wasteful number, since it uses less digits than its factorization.

90415624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869400 (or 869396 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 90415624 is about 9508.7130569809. The cubic root of 90415624 is about 448.8292596711.

The spelling of 90415624 in words is "ninety million, four hundred fifteen thousand, six hundred twenty-four".