22256836 has 12 divisors (see below), whose sum is σ = 44513728. Its totient is φ = 9538632.

The previous prime is 22256831. The next prime is 22256837. The reversal of 22256836 is 63865222.

22256836 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (22256831) 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, 397416 + ... + 397471.

Almost surely, 2^22256836 is an apocalyptic number.

It is an amenable number.

22256836 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22256836 is a wasteful number, since it uses less digits than its factorization.

22256836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794898 (or 794896 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 22256836 is about 4717.7151249307. The cubic root of 22256836 is about 281.2901179974.

The spelling of 22256836 in words is "twenty-two million, two hundred fifty-six thousand, eight hundred thirty-six".