90072792 has 24 divisors (see below), whose sum is σ = 243947340. Its totient is φ = 30024240.

The previous prime is 90072781. The next prime is 90072793. The reversal of 90072792 is 29727009.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×90072792² = 16226215717350528, which contains 22 as substring.

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 (90072793) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 625434 + ... + 625577.

Almost surely, 2^90072792 is an apocalyptic number.

It is an amenable number.

90072792 is an abundant number, since it is smaller than the sum of its proper divisors (153874548).

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

90072792 is a wasteful number, since it uses less digits than its factorization.

90072792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251023 (or 1251016 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 90072792 is about 9490.6686803407. The cubic root of 90072792 is about 448.2612607696.

The spelling of 90072792 in words is "ninety million, seventy-two thousand, seven hundred ninety-two".