91885122 has 48 divisors (see below), whose sum is σ = 228209280. Its totient is φ = 26174016.

The previous prime is 91885091. The next prime is 91885127. The reversal of 91885122 is 22158819.

It is not an unprimeable number, because it can be changed into a prime (91885127) 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, 50643 + ... + 52425.

It is an arithmetic number, because the mean of its divisors is an integer number (4754360).

Almost surely, 2^91885122 is an apocalyptic number.

91885122 is an abundant number, since it is smaller than the sum of its proper divisors (136324158).

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

91885122 is a wasteful number, since it uses less digits than its factorization.

91885122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207 (or 2204 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 91885122 is about 9585.6727463439. The cubic root of 91885122 is about 451.2477666062.

The spelling of 91885122 in words is "ninety-one million, eight hundred eighty-five thousand, one hundred twenty-two".