22399256 has 16 divisors (see below), whose sum is σ = 45816840. Its totient is φ = 10181440.

The previous prime is 22399249. The next prime is 22399277. The reversal of 22399256 is 65299322.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 127181 + ... + 127356.

Almost surely, 2^22399256 is an apocalyptic number.

It is an amenable number.

22399256 is an abundant number, since it is smaller than the sum of its proper divisors (23417584).

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

22399256 is a wasteful number, since it uses less digits than its factorization.

22399256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254554 (or 254550 counting only the distinct ones).

The product of its digits is 58320, while the sum is 38.

The square root of 22399256 is about 4732.7852264813. The cubic root of 22399256 is about 281.8888283015. Note that the first 4 decimals are identical.

The spelling of 22399256 in words is "twenty-two million, three hundred ninety-nine thousand, two hundred fifty-six".