91928382 has 64 divisors (see below), whose sum is σ = 228662784. Its totient is φ = 23990400.

The previous prime is 91928377. The next prime is 91928399. The reversal of 91928382 is 28382919.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54313 + ... + 55979.

It is an arithmetic number, because the mean of its divisors is an integer number (3572856).

Almost surely, 2^91928382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91928382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114331392).

91928382 is an abundant number, since it is smaller than the sum of its proper divisors (136734402).

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

91928382 is a wasteful number, since it uses less digits than its factorization.

91928382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793.

The product of its digits is 62208, while the sum is 42.

The square root of 91928382 is about 9587.9289734541. The cubic root of 91928382 is about 451.3185721049.

The spelling of 91928382 in words is "ninety-one million, nine hundred twenty-eight thousand, three hundred eighty-two".