91325772 has 48 divisors (see below), whose sum is σ = 237619200. Its totient is φ = 30332880.

The previous prime is 91325771. The next prime is 91325777. The reversal of 91325772 is 27752319.

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 (91325771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32229 + ... + 34947.

It is an arithmetic number, because the mean of its divisors is an integer number (4950400).

Almost surely, 2^91325772 is an apocalyptic number.

It is an amenable number.

91325772 is an abundant number, since it is smaller than the sum of its proper divisors (146293428).

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

91325772 is a wasteful number, since it uses less digits than its factorization.

91325772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3043 (or 3035 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 91325772 is about 9556.4518520212. The cubic root of 91325772 is about 450.3302464680.

The spelling of 91325772 in words is "ninety-one million, three hundred twenty-five thousand, seven hundred seventy-two".