22681256 has 24 divisors (see below), whose sum is σ = 45896970. Its totient is φ = 10445856.

The previous prime is 22681207. The next prime is 22681271. The reversal of 22681256 is 65218622.

It can be written as a sum of positive squares in only one way, i.e., 21808900 + 872356 = 4670^2 + 934^2 .

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 5 ways as a sum of consecutive naturals, for example, 48335 + ... + 48801.

Almost surely, 2^22681256 is an apocalyptic number.

22681256 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

22681256 is an abundant number, since it is smaller than the sum of its proper divisors (23215714).

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

22681256 is an equidigital number, since it uses as much as digits as its factorization.

22681256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953 (or 482 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 22681256 is about 4762.4842256957. The cubic root of 22681256 is about 283.0668639638.

Adding to 22681256 its reverse (65218622), we get a palindrome (87899878).

The spelling of 22681256 in words is "twenty-two million, six hundred eighty-one thousand, two hundred fifty-six".