91113672 has 64 divisors (see below), whose sum is σ = 255991680. Its totient is φ = 26813952.

The previous prime is 91113667. The next prime is 91113677. The reversal of 91113672 is 27631119.

It is an interprime number because it is at equal distance from previous prime (91113667) and next prime (91113677).

It is not an unprimeable number, because it can be changed into a prime (91113677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 828 + ... + 13524.

It is an arithmetic number, because the mean of its divisors is an integer number (3999870).

Almost surely, 2^91113672 is an apocalyptic number.

91113672 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91113672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127995840).

91113672 is an abundant number, since it is smaller than the sum of its proper divisors (164878008).

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

91113672 is a wasteful number, since it uses less digits than its factorization.

91113672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12742 (or 12738 counting only the distinct ones).

The product of its digits is 2268, while the sum is 30.

The square root of 91113672 is about 9545.3481864204. The cubic root of 91113672 is about 449.9813523137.

The spelling of 91113672 in words is "ninety-one million, one hundred thirteen thousand, six hundred seventy-two".