18589672 has 16 divisors (see below), whose sum is σ = 35008740. Its totient is φ = 9254016.

The previous prime is 18589663. The next prime is 18589673. The reversal of 18589672 is 27698581.

It can be written as a sum of positive squares in 2 ways, for example, as 16112196 + 2477476 = 4014^2 + 1574^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (18589673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3123 + ... + 6850.

Almost surely, 2^18589672 is an apocalyptic number.

It is an amenable number.

18589672 is a deficient number, since it is larger than the sum of its proper divisors (16419068).

18589672 is a wasteful number, since it uses less digits than its factorization.

18589672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10212 (or 10208 counting only the distinct ones).

The product of its digits is 241920, while the sum is 46.

The square root of 18589672 is about 4311.5741904785. The cubic root of 18589672 is about 264.9052562698.

The spelling of 18589672 in words is "eighteen million, five hundred eighty-nine thousand, six hundred seventy-two".