91996200 has 72 divisors (see below), whose sum is σ = 308959950. Its totient is φ = 24531840.

The previous prime is 91996193. The next prime is 91996213. The reversal of 91996200 is 269919.

It can be written as a sum of positive squares in 3 ways, for example, as 86825124 + 5171076 = 9318^2 + 2274^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23755 + ... + 27354.

Almost surely, 2^91996200 is an apocalyptic number.

91996200 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

91996200 is an abundant number, since it is smaller than the sum of its proper divisors (216963750).

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

91996200 is a wasteful number, since it uses less digits than its factorization.

91996200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51131 (or 51119 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 91996200 is about 9591.4649558866. The cubic root of 91996200 is about 451.4295280422.

The spelling of 91996200 in words is "ninety-one million, nine hundred ninety-six thousand, two hundred".