8522280 has 128 divisors (see below), whose sum is σ = 30643200. Its totient is φ = 2094336.

The previous prime is 8522251. The next prime is 8522281. The reversal of 8522280 is 822258.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (8522281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13737 + ... + 14343.

It is an arithmetic number, because the mean of its divisors is an integer number (239400).

Almost surely, 2^8522280 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 8522280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15321600).

8522280 is an abundant number, since it is smaller than the sum of its proper divisors (22120920).

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

8522280 is a wasteful number, since it uses less digits than its factorization.

8522280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 8522280 is about 2919.2944353045. The cubic root of 8522280 is about 204.2609118316.

The spelling of 8522280 in words is "eight million, five hundred twenty-two thousand, two hundred eighty".