91384160 has 96 divisors (see below), whose sum is σ = 248935680. Its totient is φ = 31053312.

The previous prime is 91384151. The next prime is 91384177. The reversal of 91384160 is 6148319.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155387 + ... + 155973.

It is an arithmetic number, because the mean of its divisors is an integer number (2593080).

Almost surely, 2^91384160 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 91384160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124467840).

91384160 is an abundant number, since it is smaller than the sum of its proper divisors (157551520).

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

91384160 is a wasteful number, since it uses less digits than its factorization.

91384160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 740 counting only the distinct ones).

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

The square root of 91384160 is about 9559.5062634008. The cubic root of 91384160 is about 450.4261970425.

The spelling of 91384160 in words is "ninety-one million, three hundred eighty-four thousand, one hundred sixty".