8791520 has 48 divisors (see below), whose sum is σ = 21682080. Its totient is φ = 3362304.

The previous prime is 8791493. The next prime is 8791537. The reversal of 8791520 is 251978.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2486 + ... + 4874.

It is an arithmetic number, because the mean of its divisors is an integer number (451710).

Almost surely, 2^8791520 is an apocalyptic number.

8791520 is a gapful number since it is divisible by the number (80) 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 8791520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10841040).

8791520 is an abundant number, since it is smaller than the sum of its proper divisors (12890560).

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

8791520 is a wasteful number, since it uses less digits than its factorization.

8791520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427 (or 2419 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 8791520 is about 2965.0497466316. The cubic root of 8791520 is about 206.3896856012.

The spelling of 8791520 in words is "eight million, seven hundred ninety-one thousand, five hundred twenty".