91536080 has 40 divisors (see below), whose sum is σ = 213453600. Its totient is φ = 36505728.

The previous prime is 91536047. The next prime is 91536089. The reversal of 91536080 is 8063519.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91536089) 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, 28811 + ... + 31829.

It is an arithmetic number, because the mean of its divisors is an integer number (5336340).

Almost surely, 2^91536080 is an apocalyptic number.

It is an amenable number.

91536080 is an abundant number, since it is smaller than the sum of its proper divisors (121917520).

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

91536080 is a wasteful number, since it uses less digits than its factorization.

91536080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3411 (or 3405 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 91536080 is about 9567.4489807890. The cubic root of 91536080 is about 450.6756599087.

Adding to 91536080 its reverse (8063519), we get a palindrome (99599599).

The spelling of 91536080 in words is "ninety-one million, five hundred thirty-six thousand, eighty".