22072256 has 28 divisors (see below), whose sum is σ = 46378368. Its totient is φ = 10386432.

The previous prime is 22072247. The next prime is 22072283. The reversal of 22072256 is 65227022.

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, 9056 + ... + 11231.

Almost surely, 2^22072256 is an apocalyptic number.

It is an amenable number.

22072256 is an abundant number, since it is smaller than the sum of its proper divisors (24306112).

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

22072256 is a wasteful number, since it uses less digits than its factorization.

22072256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20316 (or 20306 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 22072256 is about 4698.1119612031. Note that the first 3 decimals coincide. The cubic root of 22072256 is about 280.5103617051.

Adding to 22072256 its reverse (65227022), we get a palindrome (87299278).

The spelling of 22072256 in words is "twenty-two million, seventy-two thousand, two hundred fifty-six".