91940832 has 120 divisors (see below), whose sum is σ = 274428000. Its totient is φ = 30191616.

The previous prime is 91940831. The next prime is 91940839. The reversal of 91940832 is 23804919.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91940831) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 204544 + ... + 204992.

It is an arithmetic number, because the mean of its divisors is an integer number (2286900).

Almost surely, 2^91940832 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 91940832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137214000).

91940832 is an abundant number, since it is smaller than the sum of its proper divisors (182487168).

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

91940832 is a wasteful number, since it uses less digits than its factorization.

91940832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 533 counting only the distinct ones).

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

The square root of 91940832 is about 9588.5782053441. The cubic root of 91940832 is about 451.3389454378.

The spelling of 91940832 in words is "ninety-one million, nine hundred forty thousand, eight hundred thirty-two".