91073488 has 80 divisors (see below), whose sum is σ = 207576000. Its totient is φ = 38246400.

The previous prime is 91073467. The next prime is 91073497. The reversal of 91073488 is 88437019.

It is a super-2 number, since 2×91073488² = 16588760432972288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91073488.

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, 182263 + ... + 182761.

It is an arithmetic number, because the mean of its divisors is an integer number (2594700).

Almost surely, 2^91073488 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 91073488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103788000).

91073488 is an abundant number, since it is smaller than the sum of its proper divisors (116502512).

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

91073488 is a wasteful number, since it uses less digits than its factorization.

91073488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596 (or 590 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 91073488 is about 9543.2430546434. The cubic root of 91073488 is about 449.9151906017.

The spelling of 91073488 in words is "ninety-one million, seventy-three thousand, four hundred eighty-eight".