22255912 has 16 divisors (see below), whose sum is σ = 47691360. Its totient is φ = 9538224.

The previous prime is 22255903. The next prime is 22255939. The reversal of 22255912 is 21955222.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 198658 + ... + 198769.

It is an arithmetic number, because the mean of its divisors is an integer number (2980710).

Almost surely, 2^22255912 is an apocalyptic number.

It is an amenable number.

22255912 is an abundant number, since it is smaller than the sum of its proper divisors (25435448).

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

22255912 is a wasteful number, since it uses less digits than its factorization.

22255912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397440 (or 397436 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 22255912 is about 4717.6171951527. The cubic root of 22255912 is about 281.2862253257.

The spelling of 22255912 in words is "twenty-two million, two hundred fifty-five thousand, nine hundred twelve".