22270656 has 56 divisors (see below), whose sum is σ = 59328304. Its totient is φ = 7372800.

The previous prime is 22270627. The next prime is 22270723. The reversal of 22270656 is 65607222.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36756 + ... + 37356.

It is an arithmetic number, because the mean of its divisors is an integer number (1059434).

Almost surely, 2^22270656 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 22270656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29664152).

22270656 is an abundant number, since it is smaller than the sum of its proper divisors (37057648).

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

22270656 is a wasteful number, since it uses less digits than its factorization.

22270656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 22270656 is about 4719.1795897168. The cubic root of 22270656 is about 281.3483267068.

Adding to 22270656 its reverse (65607222), we get a palindrome (87877878).

The spelling of 22270656 in words is "twenty-two million, two hundred seventy thousand, six hundred fifty-six".