91274480 has 160 divisors (see below), whose sum is σ = 250698240. Its totient is φ = 30551040.

The previous prime is 91274473. The next prime is 91274497. The reversal of 91274480 is 8447219.

It is a self number, because there is not a number n which added to its sum of digits gives 91274480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 886109 + ... + 886211.

It is an arithmetic number, because the mean of its divisors is an integer number (1566864).

Almost surely, 2^91274480 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 91274480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125349120).

91274480 is an abundant number, since it is smaller than the sum of its proper divisors (159423760).

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

91274480 is a wasteful number, since it uses less digits than its factorization.

91274480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 91274480 is about 9553.7678431078. The cubic root of 91274480 is about 450.2459231926.

The spelling of 91274480 in words is "ninety-one million, two hundred seventy-four thousand, four hundred eighty".