8291320 has 32 divisors (see below), whose sum is σ = 19012320. Its totient is φ = 3253120.

The previous prime is 8291299. The next prime is 8291333. The reversal of 8291320 is 231928.

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, 165 + ... + 4075.

It is an arithmetic number, because the mean of its divisors is an integer number (594135).

Almost surely, 2^8291320 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 8291320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9506160).

8291320 is an abundant number, since it is smaller than the sum of its proper divisors (10721000).

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

8291320 is a wasteful number, since it uses less digits than its factorization.

8291320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3975 (or 3971 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 8291320 is about 2879.4652281283. The cubic root of 8291320 is about 202.3987808933.

The spelling of 8291320 in words is "eight million, two hundred ninety-one thousand, three hundred twenty".