91230880 has 96 divisors (see below), whose sum is σ = 242331264. Its totient is φ = 32203776.

The previous prime is 91230877. The next prime is 91230961. The reversal of 91230880 is 8803219.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46887 + ... + 48793.

It is an arithmetic number, because the mean of its divisors is an integer number (2524284).

Almost surely, 2^91230880 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 91230880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121165632).

91230880 is an abundant number, since it is smaller than the sum of its proper divisors (151100384).

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

91230880 is a wasteful number, since it uses less digits than its factorization.

91230880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1958 (or 1950 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 91230880 is about 9551.4857483012. The cubic root of 91230880 is about 450.1742206064.

The spelling of 91230880 in words is "ninety-one million, two hundred thirty thousand, eight hundred eighty".