91448480 has 48 divisors (see below), whose sum is σ = 217746144. Its totient is φ = 36291840.

The previous prime is 91448473. The next prime is 91448537. The reversal of 91448480 is 8484419.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18779 + ... + 23141.

It is an arithmetic number, because the mean of its divisors is an integer number (4536378).

Almost surely, 2^91448480 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 91448480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108873072).

91448480 is an abundant number, since it is smaller than the sum of its proper divisors (126297664).

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

91448480 is a wasteful number, since it uses less digits than its factorization.

91448480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4509 (or 4501 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 91448480 is about 9562.8698621282. The cubic root of 91448480 is about 450.5318485345.

It can be divided in two parts, 914 and 48480, that added together give a palindrome (49394).

The spelling of 91448480 in words is "ninety-one million, four hundred forty-eight thousand, four hundred eighty".