8221044 has 48 divisors (see below), whose sum is σ = 20854400. Its totient is φ = 2505600.

The previous prime is 8221027. The next prime is 8221061. The reversal of 8221044 is 4401228.

It is an interprime number because it is at equal distance from previous prime (8221027) and next prime (8221061).

It is a self number, because there is not a number n which added to its sum of digits gives 8221044.

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, 23382 + ... + 23730.

Almost surely, 2^8221044 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 8221044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10427200).

8221044 is an abundant number, since it is smaller than the sum of its proper divisors (12633356).

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

8221044 is a wasteful number, since it uses less digits than its factorization.

8221044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 8221044 is about 2867.2362999934. The cubic root of 8221044 is about 201.8253236215.

The spelling of 8221044 in words is "eight million, two hundred twenty-one thousand, forty-four".