91252768 has 36 divisors (see below), whose sum is σ = 182693070. Its totient is φ = 44861696.

The previous prime is 91252741. The next prime is 91252771. The reversal of 91252768 is 86725219.

It can be written as a sum of positive squares in only one way, i.e., 86638864 + 4613904 = 9308^2 + 2148^2 .

Its product of digits (60480) is a multiple of the sum of its prime divisors (270).

It is a self number, because there is not a number n which added to its sum of digits gives 91252768.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 509703 + ... + 509881.

Almost surely, 2^91252768 is an apocalyptic number.

It is an amenable number.

91252768 is an abundant number, since it is smaller than the sum of its proper divisors (91440302).

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

91252768 is an equidigital number, since it uses as much as digits as its factorization.

91252768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 270 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 91252768 is about 9552.6314699145. The cubic root of 91252768 is about 450.2102194752.

The spelling of 91252768 in words is "ninety-one million, two hundred fifty-two thousand, seven hundred sixty-eight".