18289422 has 32 divisors (see below), whose sum is σ = 40930560. Its totient is φ = 6053400.

The previous prime is 18289391. The next prime is 18289429. The reversal of 18289422 is 22498281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18289429) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7033 + ... + 9275.

It is an arithmetic number, because the mean of its divisors is an integer number (1279080).

Almost surely, 2^18289422 is an apocalyptic number.

18289422 is an abundant number, since it is smaller than the sum of its proper divisors (22641138).

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

18289422 is a wasteful number, since it uses less digits than its factorization.

18289422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405 (or 2399 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 18289422 is about 4276.6133797668. The cubic root of 18289422 is about 263.4713076380.

The spelling of 18289422 in words is "eighteen million, two hundred eighty-nine thousand, four hundred twenty-two".