91113380 has 24 divisors (see below), whose sum is σ = 192563448. Its totient is φ = 36211968.

The previous prime is 91113329. The next prime is 91113437. The reversal of 91113380 is 8331119.

It can be written as a sum of positive squares in 4 ways, for example, as 178084 + 90935296 = 422^2 + 9536^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11369 + ... + 17648.

It is an arithmetic number, because the mean of its divisors is an integer number (8023477).

Almost surely, 2^91113380 is an apocalyptic number.

It is an amenable number.

91113380 is an abundant number, since it is smaller than the sum of its proper divisors (101450068).

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

91113380 is a wasteful number, since it uses less digits than its factorization.

91113380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29183 (or 29181 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 91113380 is about 9545.3328909997. The cubic root of 91113380 is about 449.9808716149.

Adding to 91113380 its reverse (8331119), we get a palindrome (99444499).

The spelling of 91113380 in words is "ninety-one million, one hundred thirteen thousand, three hundred eighty".