91996836 has 24 divisors (see below), whose sum is σ = 215564160. Its totient is φ = 30536352.

The previous prime is 91996831. The next prime is 91996859. The reversal of 91996836 is 63869919.

It is not an unprimeable number, because it can be changed into a prime (91996831) 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, 13171 + ... + 18906.

It is an arithmetic number, because the mean of its divisors is an integer number (8981840).

Almost surely, 2^91996836 is an apocalyptic number.

It is an amenable number.

91996836 is an abundant number, since it is smaller than the sum of its proper divisors (123567324).

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

91996836 is a wasteful number, since it uses less digits than its factorization.

91996836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32323 (or 32321 counting only the distinct ones).

The product of its digits is 629856, while the sum is 51.

The square root of 91996836 is about 9591.4981103058. The cubic root of 91996836 is about 451.4305683334.

The spelling of 91996836 in words is "ninety-one million, nine hundred ninety-six thousand, eight hundred thirty-six".