8573320 has 64 divisors (see below), whose sum is σ = 22423680. Its totient is φ = 2889216.

The previous prime is 8573309. The next prime is 8573353. The reversal of 8573320 is 233758.

8573320 = 749² + 750² + ... + 763².

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 18532 + ... + 18988.

It is an arithmetic number, because the mean of its divisors is an integer number (350370).

Almost surely, 2^8573320 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 8573320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11211840).

8573320 is an abundant number, since it is smaller than the sum of its proper divisors (13850360).

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

8573320 is a wasteful number, since it uses less digits than its factorization.

8573320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 8573320 is about 2928.0232239516. The cubic root of 8573320 is about 204.6678738636.

The spelling of 8573320 in words is "eight million, five hundred seventy-three thousand, three hundred twenty".