91204960 has 144 divisors (see below), whose sum is σ = 271077408. Its totient is φ = 28385280.

The previous prime is 91204937. The next prime is 91204979. The reversal of 91204960 is 6940219.

It is a happy number.

It is a congruent number.

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, 135184 + ... + 135856.

It is an arithmetic number, because the mean of its divisors is an integer number (1882482).

Almost surely, 2^91204960 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 91204960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135538704).

91204960 is an abundant number, since it is smaller than the sum of its proper divisors (179872448).

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

91204960 is a wasteful number, since it uses less digits than its factorization.

91204960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 91204960 is about 9550.1287949430. The cubic root of 91204960 is about 450.1315829197.

The spelling of 91204960 in words is "ninety-one million, two hundred four thousand, nine hundred sixty".