22227912 has 128 divisors (see below), whose sum is σ = 72019200. Its totient is φ = 6220800.

The previous prime is 22227911. The next prime is 22227917. The reversal of 22227912 is 21972222.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22227911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92112 + ... + 92352.

It is an arithmetic number, because the mean of its divisors is an integer number (562650).

Almost surely, 2^22227912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22227912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36009600).

22227912 is an abundant number, since it is smaller than the sum of its proper divisors (49791288).

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

22227912 is a wasteful number, since it uses less digits than its factorization.

22227912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 314 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 22227912 is about 4714.6486613533. The cubic root of 22227912 is about 281.1682144419.

The spelling of 22227912 in words is "twenty-two million, two hundred twenty-seven thousand, nine hundred twelve".