91992264 has 128 divisors (see below), whose sum is σ = 287427840. Its totient is φ = 23887872.

The previous prime is 91992239. The next prime is 91992293. The reversal of 91992264 is 46229919.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159144 + ... + 159720.

It is an arithmetic number, because the mean of its divisors is an integer number (2245530).

Almost surely, 2^91992264 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 91992264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143713920).

91992264 is an abundant number, since it is smaller than the sum of its proper divisors (195435576).

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

91992264 is a wasteful number, since it uses less digits than its factorization.

91992264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679 (or 675 counting only the distinct ones).

The product of its digits is 69984, while the sum is 42.

The square root of 91992264 is about 9591.2597712709. The cubic root of 91992264 is about 451.4230899068.

The spelling of 91992264 in words is "ninety-one million, nine hundred ninety-two thousand, two hundred sixty-four".