91156104 has 96 divisors (see below), whose sum is σ = 275795520. Its totient is φ = 28040256.

The previous prime is 91156099. The next prime is 91156111. The reversal of 91156104 is 40165119.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23469 + ... + 27075.

It is an arithmetic number, because the mean of its divisors is an integer number (2872870).

Almost surely, 2^91156104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91156104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137897760).

91156104 is an abundant number, since it is smaller than the sum of its proper divisors (184639416).

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

91156104 is a wasteful number, since it uses less digits than its factorization.

91156104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3641 (or 3625 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 91156104 is about 9547.5705810431. The cubic root of 91156104 is about 450.0511941757.

The spelling of 91156104 in words is "ninety-one million, one hundred fifty-six thousand, one hundred four".