91885416 has 32 divisors (see below), whose sum is σ = 262530240. Its totient is φ = 26252928.

The previous prime is 91885397. The next prime is 91885429. The reversal of 91885416 is 61458819.

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 7 ways as a sum of consecutive naturals, for example, 273301 + ... + 273636.

It is an arithmetic number, because the mean of its divisors is an integer number (8204070).

Almost surely, 2^91885416 is an apocalyptic number.

It is an amenable number.

91885416 is an abundant number, since it is smaller than the sum of its proper divisors (170644824).

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

91885416 is a wasteful number, since it uses less digits than its factorization.

91885416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546953 (or 546949 counting only the distinct ones).

The product of its digits is 69120, while the sum is 42.

The square root of 91885416 is about 9585.6880817185. The cubic root of 91885416 is about 451.2482478837.

The spelling of 91885416 in words is "ninety-one million, eight hundred eighty-five thousand, four hundred sixteen".