91322892 has 54 divisors (see below), whose sum is σ = 243667788. Its totient is φ = 28834704.

The previous prime is 91322879. The next prime is 91322897. The reversal of 91322892 is 29822319.

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 (91322897) 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 17 ways as a sum of consecutive naturals, for example, 9483 + ... + 16509.

Almost surely, 2^91322892 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 91322892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121833894).

91322892 is an abundant number, since it is smaller than the sum of its proper divisors (152344896).

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

91322892 is a wasteful number, since it uses less digits than its factorization.

91322892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7075 (or 7051 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 91322892 is about 9556.3011672927. The cubic root of 91322892 is about 450.3255126281.

The spelling of 91322892 in words is "ninety-one million, three hundred twenty-two thousand, eight hundred ninety-two".