91612832 has 48 divisors (see below), whose sum is σ = 193505760. Its totient is φ = 42561792.

The previous prime is 91612831. The next prime is 91612837. The reversal of 91612832 is 23821619.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (91612831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30803 + ... + 33645.

It is an arithmetic number, because the mean of its divisors is an integer number (4031370).

Almost surely, 2^91612832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91612832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96752880).

91612832 is an abundant number, since it is smaller than the sum of its proper divisors (101892928).

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

91612832 is a wasteful number, since it uses less digits than its factorization.

91612832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2925 (or 2917 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 91612832 is about 9571.4592408890. The cubic root of 91612832 is about 450.8015869198.

The spelling of 91612832 in words is "ninety-one million, six hundred twelve thousand, eight hundred thirty-two".