91816960 has 88 divisors (see below), whose sum is σ = 224023680. Its totient is φ = 36102144.

The previous prime is 91816951. The next prime is 91816961. The reversal of 91816960 is 6961819.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (91816961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404367 + ... + 404593.

Almost surely, 2^91816960 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 91816960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112011840).

91816960 is an abundant number, since it is smaller than the sum of its proper divisors (132206720).

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

91816960 is a wasteful number, since it uses less digits than its factorization.

91816960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 91816960 is about 9582.1166763925. The cubic root of 91816960 is about 451.1361578266.

The spelling of 91816960 in words is "ninety-one million, eight hundred sixteen thousand, nine hundred sixty".