22530256 has 20 divisors (see below), whose sum is σ = 49888672. Its totient is φ = 9655776.

The previous prime is 22530251. The next prime is 22530269. The reversal of 22530256 is 65203522.

It is a super-2 number, since 2×22530256² = 1015224870851072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22530256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22530251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100470 + ... + 100693.

Almost surely, 2^22530256 is an apocalyptic number.

It is an amenable number.

22530256 is an abundant number, since it is smaller than the sum of its proper divisors (27358416).

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

22530256 is a wasteful number, since it uses less digits than its factorization.

22530256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201178 (or 201172 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 22530256 is about 4746.6046812432. The cubic root of 22530256 is about 282.4372941462.

Adding to 22530256 its reverse (65203522), we get a palindrome (87733778).

The spelling of 22530256 in words is "twenty-two million, five hundred thirty thousand, two hundred fifty-six".