91120160 has 48 divisors (see below), whose sum is σ = 222227712. Its totient is φ = 35270400.

The previous prime is 91120123. The next prime is 91120177. The reversal of 91120160 is 6102119.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4226 + ... + 14145.

It is an arithmetic number, because the mean of its divisors is an integer number (4629744).

Almost surely, 2^91120160 is an apocalyptic number.

It is an amenable number.

91120160 is an abundant number, since it is smaller than the sum of its proper divisors (131107552).

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

91120160 is a wasteful number, since it uses less digits than its factorization.

91120160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18417 (or 18409 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 91120160 is about 9545.6880317764. The cubic root of 91120160 is about 449.9920327808.

Adding to 91120160 its reverse (6102119), we get a palindrome (97222279).

The spelling of 91120160 in words is "ninety-one million, one hundred twenty thousand, one hundred sixty".