90904716 has 72 divisors (see below), whose sum is σ = 264197024. Its totient is φ = 25816320.

The previous prime is 90904711. The next prime is 90904733. The reversal of 90904716 is 61740909.

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

It is not an unprimeable number, because it can be changed into a prime (90904711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44616 + ... + 46608.

Almost surely, 2^90904716 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 90904716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132098512).

90904716 is an abundant number, since it is smaller than the sum of its proper divisors (173292308).

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

90904716 is a wasteful number, since it uses less digits than its factorization.

90904716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191 (or 2186 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 90904716 is about 9534.3964675275. The cubic root of 90904716 is about 449.6371000126.

The spelling of 90904716 in words is "ninety million, nine hundred four thousand, seven hundred sixteen".