91280952 has 128 divisors (see below), whose sum is σ = 294105600. Its totient is φ = 25691904.

The previous prime is 91280941. The next prime is 91280983. The reversal of 91280952 is 25908219.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109963 + ... + 110789.

It is an arithmetic number, because the mean of its divisors is an integer number (2297700).

Almost surely, 2^91280952 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 91280952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147052800).

91280952 is an abundant number, since it is smaller than the sum of its proper divisors (202824648).

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

91280952 is a wasteful number, since it uses less digits than its factorization.

91280952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922 (or 912 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 91280952 is about 9554.1065516353. The cubic root of 91280952 is about 450.2565648044.

The spelling of 91280952 in words is "ninety-one million, two hundred eighty thousand, nine hundred fifty-two".