90997272 has 48 divisors (see below), whose sum is σ = 247572000. Its totient is φ = 30194496.

The previous prime is 90997267. The next prime is 90997301. The reversal of 90997272 is 27279909.

It is a super-2 number, since 2×90997272² = 16561007022883968, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13729 + ... + 19247.

It is an arithmetic number, because the mean of its divisors is an integer number (5157750).

Almost surely, 2^90997272 is an apocalyptic number.

It is an amenable number.

90997272 is an abundant number, since it is smaller than the sum of its proper divisors (156574728).

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

90997272 is a wasteful number, since it uses less digits than its factorization.

90997272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5760 (or 5753 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 90997272 is about 9539.2490270461. The cubic root of 90997272 is about 449.7896498364.

The spelling of 90997272 in words is "ninety million, nine hundred ninety-seven thousand, two hundred seventy-two".