22494128 has 20 divisors (see below), whose sum is σ = 46146600. Its totient is φ = 10585344.

The previous prime is 22494103. The next prime is 22494133. The reversal of 22494128 is 82149422.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22494094 and 22494103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41078 + ... + 41621.

It is an arithmetic number, because the mean of its divisors is an integer number (2307330).

Almost surely, 2^22494128 is an apocalyptic number.

It is an amenable number.

22494128 is an abundant number, since it is smaller than the sum of its proper divisors (23652472).

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

22494128 is a wasteful number, since it uses less digits than its factorization.

22494128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82724 (or 82718 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 22494128 is about 4742.7974867160. The cubic root of 22494128 is about 282.2862475784.

It can be divided in two parts, 22494 and 128, that added together give a palindrome (22622).

The spelling of 22494128 in words is "twenty-two million, four hundred ninety-four thousand, one hundred twenty-eight".