91895872 has 28 divisors (see below), whose sum is σ = 183386476. Its totient is φ = 45688320.

The previous prime is 91895851. The next prime is 91895893. The reversal of 91895872 is 27859819.

It is an interprime number because it is at equal distance from previous prime (91895851) and next prime (91895893).

It can be written as a sum of positive squares in 2 ways, for example, as 9884736 + 82011136 = 3144^2 + 9056^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7618 + ... + 15550.

It is an arithmetic number, because the mean of its divisors is an integer number (6549517).

Almost surely, 2^91895872 is an apocalyptic number.

It is an amenable number.

91895872 is a deficient number, since it is larger than the sum of its proper divisors (91490604).

91895872 is a wasteful number, since it uses less digits than its factorization.

91895872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8126 (or 8116 counting only the distinct ones).

The product of its digits is 362880, while the sum is 49.

The square root of 91895872 is about 9586.2334626275. The cubic root of 91895872 is about 451.2653636674.

The spelling of 91895872 in words is "ninety-one million, eight hundred ninety-five thousand, eight hundred seventy-two".