8220028 has 12 divisors (see below), whose sum is σ = 14446432. Its totient is φ = 4092480.

The previous prime is 8220013. The next prime is 8220089. The reversal of 8220028 is 8200228.

It is a junction number, because it is equal to n+sod(n) for n = 8219990 and 8220008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3300 + ... + 5227.

Almost surely, 2^8220028 is an apocalyptic number.

It is an amenable number.

8220028 is a deficient number, since it is larger than the sum of its proper divisors (6226404).

8220028 is a wasteful number, since it uses less digits than its factorization.

8220028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8772 (or 8770 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 8220028 is about 2867.0591204229. The cubic root of 8220028 is about 201.8170090661.

It can be divided in two parts, 82200 and 28, that added together give a palindrome (82228).

The spelling of 8220028 in words is "eight million, two hundred twenty thousand, twenty-eight".