22989018 has 16 divisors (see below), whose sum is σ = 49514976. Its totient is φ = 7073520.

The previous prime is 22989017. The next prime is 22989023. The reversal of 22989018 is 81098922.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (22989013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147288 + ... + 147443.

It is an arithmetic number, because the mean of its divisors is an integer number (3094686).

Almost surely, 2^22989018 is an apocalyptic number.

22989018 is an abundant number, since it is smaller than the sum of its proper divisors (26525958).

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

22989018 is a wasteful number, since it uses less digits than its factorization.

22989018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294749.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 22989018 is about 4794.6864339600. The cubic root of 22989018 is about 284.3414279573.

The spelling of 22989018 in words is "twenty-two million, nine hundred eighty-nine thousand, eighteen".