91860480 has 200 divisors, whose sum is σ = 329757912. Its totient is φ = 24440832.

The previous prime is 91860451. The next prime is 91860493. The reversal of 91860480 is 8406819.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 207139 + ... + 207581.

Almost surely, 2^91860480 is an apocalyptic number.

91860480 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91860480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164878956).

91860480 is an abundant number, since it is smaller than the sum of its proper divisors (237897432).

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

91860480 is an equidigital number, since it uses as much as digits as its factorization.

91860480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 91860480 is about 9584.3873043612. The cubic root of 91860480 is about 451.2074240517.

The spelling of 91860480 in words is "ninety-one million, eight hundred sixty thousand, four hundred eighty".