91230856 has 16 divisors (see below), whose sum is σ = 180061200. Its totient is φ = 43214544.

The previous prime is 91230851. The next prime is 91230871. The reversal of 91230856 is 65803219.

It is not an unprimeable number, because it can be changed into a prime (91230851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299950 + ... + 300253.

It is an arithmetic number, because the mean of its divisors is an integer number (11253825).

Almost surely, 2^91230856 is an apocalyptic number.

It is an amenable number.

91230856 is a deficient number, since it is larger than the sum of its proper divisors (88830344).

91230856 is a wasteful number, since it uses less digits than its factorization.

91230856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600228 (or 600224 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 91230856 is about 9551.4844919520. The cubic root of 91230856 is about 450.1741811308.

The spelling of 91230856 in words is "ninety-one million, two hundred thirty thousand, eight hundred fifty-six".