91850880 has 128 divisors (see below), whose sum is σ = 319464000. Its totient is φ = 22261760.

The previous prime is 91850873. The next prime is 91850887. The reversal of 91850880 is 8805819.

It is an interprime number because it is at equal distance from previous prime (91850873) and next prime (91850887).

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (91850887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18946 + ... + 23294.

Almost surely, 2^91850880 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 91850880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159732000).

91850880 is an abundant number, since it is smaller than the sum of its proper divisors (227613120).

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

91850880 is a wasteful number, since it uses less digits than its factorization.

91850880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4382 (or 4370 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 39.

The square root of 91850880 is about 9583.8864767901. The cubic root of 91850880 is about 451.1917054961.

The spelling of 91850880 in words is "ninety-one million, eight hundred fifty thousand, eight hundred eighty".