91880448 has 88 divisors (see below), whose sum is σ = 267256320. Its totient is φ = 27832320.

The previous prime is 91880389. The next prime is 91880471. The reversal of 91880448 is 84408819.

It is a tau number, because it is divible by the number of its divisors (88).

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 7 ways as a sum of consecutive naturals, for example, 32433 + ... + 35151.

Almost surely, 2^91880448 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 91880448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133628160).

91880448 is an abundant number, since it is smaller than the sum of its proper divisors (175375872).

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

91880448 is a wasteful number, since it uses less digits than its factorization.

91880448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753 (or 2735 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 91880448 is about 9585.4289418888. The cubic root of 91880448 is about 451.2401151397.

The spelling of 91880448 in words is "ninety-one million, eight hundred eighty thousand, four hundred forty-eight".