8221880 has 64 divisors (see below), whose sum is σ = 19945440. Its totient is φ = 3039232.

The previous prime is 8221859. The next prime is 8221891. The reversal of 8221880 is 881228.

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, 72704 + ... + 72816.

Almost surely, 2^8221880 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 8221880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9972720).

8221880 is an abundant number, since it is smaller than the sum of its proper divisors (11723560).

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

8221880 is a wasteful number, since it uses less digits than its factorization.

8221880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 29.

The square root of 8221880 is about 2867.3820812720. The cubic root of 8221880 is about 201.8321646120.

The spelling of 8221880 in words is "eight million, two hundred twenty-one thousand, eight hundred eighty".