22256120 has 16 divisors (see below), whose sum is σ = 50076360. Its totient is φ = 8902432.

The previous prime is 22256099. The next prime is 22256123. The reversal of 22256120 is 2165222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22256092 and 22256101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22256123) 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, 278162 + ... + 278241.

Almost surely, 2^22256120 is an apocalyptic number.

22256120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22256120 is an abundant number, since it is smaller than the sum of its proper divisors (27820240).

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

22256120 is a wasteful number, since it uses less digits than its factorization.

22256120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556414 (or 556410 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 22256120 is about 4717.6392401285. The cubic root of 22256120 is about 281.2871016075.

The spelling of 22256120 in words is "twenty-two million, two hundred fifty-six thousand, one hundred twenty".