91900272 has 40 divisors (see below), whose sum is σ = 247734144. Its totient is φ = 29301184.

The previous prime is 91900253. The next prime is 91900273. The reversal of 91900272 is 27200919.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91900273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40518 + ... + 42725.

Almost surely, 2^91900272 is an apocalyptic number.

91900272 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

91900272 is an abundant number, since it is smaller than the sum of its proper divisors (155833872).

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

91900272 is a wasteful number, since it uses less digits than its factorization.

91900272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83277 (or 83271 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 91900272 is about 9586.4629556474. The cubic root of 91900272 is about 451.2725657896.

The spelling of 91900272 in words is "ninety-one million, nine hundred thousand, two hundred seventy-two".