22428018 has 24 divisors (see below), whose sum is σ = 51152400. Its totient is φ = 7082424.

The previous prime is 22428017. The next prime is 22428019. The reversal of 22428018 is 81082422.

It is an interprime number because it is at equal distance from previous prime (22428017) and next prime (22428019).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22427982 and 22428000.

It is not an unprimeable number, because it can be changed into a prime (22428017) 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 11 ways as a sum of consecutive naturals, for example, 32448 + ... + 33131.

It is an arithmetic number, because the mean of its divisors is an integer number (2131350).

Almost surely, 2^22428018 is an apocalyptic number.

22428018 is an abundant number, since it is smaller than the sum of its proper divisors (28724382).

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

22428018 is a wasteful number, since it uses less digits than its factorization.

22428018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65606 (or 65603 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 22428018 is about 4735.8228429704. The cubic root of 22428018 is about 282.0094307997.

The spelling of 22428018 in words is "twenty-two million, four hundred twenty-eight thousand, eighteen".