22256738 has 16 divisors (see below), whose sum is σ = 38330880. Its totient is φ = 9494496.

The previous prime is 22256719. The next prime is 22256743. The reversal of 22256738 is 83765222.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22256698 and 22256707.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443 + ... + 6686.

It is an arithmetic number, because the mean of its divisors is an integer number (2395680).

Almost surely, 2^22256738 is an apocalyptic number.

22256738 is a deficient number, since it is larger than the sum of its proper divisors (16074142).

22256738 is a wasteful number, since it uses less digits than its factorization.

22256738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7361.

The product of its digits is 40320, while the sum is 35.

The square root of 22256738 is about 4717.7047385355. The cubic root of 22256738 is about 281.2897051434.

The spelling of 22256738 in words is "twenty-two million, two hundred fifty-six thousand, seven hundred thirty-eight".