91492280 has 64 divisors (see below), whose sum is σ = 225698400. Its totient is φ = 33103360.

The previous prime is 91492273. The next prime is 91492301. The reversal of 91492280 is 8229419.

It is a self number, because there is not a number n which added to its sum of digits gives 91492280.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117974 + ... + 118746.

Almost surely, 2^91492280 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 91492280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112849200).

91492280 is an abundant number, since it is smaller than the sum of its proper divisors (134206120).

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

91492280 is a wasteful number, since it uses less digits than its factorization.

91492280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064 (or 1060 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 91492280 is about 9565.1596954782. The cubic root of 91492280 is about 450.6037656960.

The spelling of 91492280 in words is "ninety-one million, four hundred ninety-two thousand, two hundred eighty".