91790160 has 160 divisors (see below), whose sum is σ = 354834432. Its totient is φ = 19069440.

The previous prime is 91790131. The next prime is 91790173. The reversal of 91790160 is 6109719.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15997 + ... + 20963.

Almost surely, 2^91790160 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 91790160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177417216).

91790160 is an abundant number, since it is smaller than the sum of its proper divisors (263044272).

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

91790160 is a wasteful number, since it uses less digits than its factorization.

91790160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5001 (or 4995 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 91790160 is about 9580.7181359228. The cubic root of 91790160 is about 451.0922602520.

Adding to 91790160 its reverse (6109719), we get a palindrome (97899879).

The spelling of 91790160 in words is "ninety-one million, seven hundred ninety thousand, one hundred sixty".