91375120 has 40 divisors (see below), whose sum is σ = 214093440. Its totient is φ = 36266880.

The previous prime is 91375093. The next prime is 91375139. The reversal of 91375120 is 2157319.

It is a tau number, because it is divible by the number of its divisors (40).

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, 6121 + ... + 14839.

It is an arithmetic number, because the mean of its divisors is an integer number (5352336).

Almost surely, 2^91375120 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 91375120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107046720).

91375120 is an abundant number, since it is smaller than the sum of its proper divisors (122718320).

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

91375120 is a wasteful number, since it uses less digits than its factorization.

91375120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8863 (or 8857 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 91375120 is about 9559.0334239399. The cubic root of 91375120 is about 450.4113440413.

The spelling of 91375120 in words is "ninety-one million, three hundred seventy-five thousand, one hundred twenty".