8220672 has 78 divisors (see below), whose sum is σ = 23852192. Its totient is φ = 2727936.

The previous prime is 8220649. The next prime is 8220689. The reversal of 8220672 is 2760228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36753 + ... + 36975.

Almost surely, 2^8220672 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 8220672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11926096).

8220672 is an abundant number, since it is smaller than the sum of its proper divisors (15631520).

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

8220672 is a wasteful number, since it uses less digits than its factorization.

8220672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 8220672 is about 2867.1714284291. The cubic root of 8220672 is about 201.8222793953.

The spelling of 8220672 in words is "eight million, two hundred twenty thousand, six hundred seventy-two".