22428238 has 16 divisors (see below), whose sum is σ = 38615040. Its totient is φ = 9570456.

The previous prime is 22428233. The next prime is 22428257. The reversal of 22428238 is 83282422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22428233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6 + ... + 6697.

It is an arithmetic number, because the mean of its divisors is an integer number (2413440).

Almost surely, 2^22428238 is an apocalyptic number.

22428238 is a deficient number, since it is larger than the sum of its proper divisors (16186802).

22428238 is a wasteful number, since it uses less digits than its factorization.

22428238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6951.

The product of its digits is 12288, while the sum is 31.

The square root of 22428238 is about 4735.8460701336. The cubic root of 22428238 is about 282.0103528885.

The spelling of 22428238 in words is "twenty-two million, four hundred twenty-eight thousand, two hundred thirty-eight".