91766448 has 120 divisors (see below), whose sum is σ = 270248576. Its totient is φ = 29030400.

The previous prime is 91766413. The next prime is 91766449. The reversal of 91766448 is 84466719.

It is not an unprimeable number, because it can be changed into a prime (91766449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 272136 + ... + 272472.

Almost surely, 2^91766448 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 91766448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135124288).

91766448 is an abundant number, since it is smaller than the sum of its proper divisors (178482128).

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

91766448 is a wasteful number, since it uses less digits than its factorization.

91766448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 434 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 91766448 is about 9579.4805704694. The cubic root of 91766448 is about 451.0534136012.

The spelling of 91766448 in words is "ninety-one million, seven hundred sixty-six thousand, four hundred forty-eight".