90169680 has 40 divisors (see below), whose sum is σ = 279526752. Its totient is φ = 24045184.

The previous prime is 90169679. The next prime is 90169693. The reversal of 90169680 is 8696109.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 187614 + ... + 188093.

Almost surely, 2^90169680 is an apocalyptic number.

It is an amenable number.

90169680 is an abundant number, since it is smaller than the sum of its proper divisors (189357072).

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

90169680 is a wasteful number, since it uses less digits than its factorization.

90169680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375723 (or 375717 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 90169680 is about 9495.7716906000. The cubic root of 90169680 is about 448.4219292428.

The spelling of 90169680 in words is "ninety million, one hundred sixty-nine thousand, six hundred eighty".