18864230 has 32 divisors (see below), whose sum is σ = 42336000. Its totient is φ = 5879520.

The previous prime is 18864221. The next prime is 18864253. The reversal of 18864230 is 3246881.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11480 + ... + 13019.

It is an arithmetic number, because the mean of its divisors is an integer number (1323000).

Almost surely, 2^18864230 is an apocalyptic number.

18864230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18864230 is an abundant number, since it is smaller than the sum of its proper divisors (23471770).

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

18864230 is a wasteful number, since it uses less digits than its factorization.

18864230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24524.

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

The square root of 18864230 is about 4343.2971346662. The cubic root of 18864230 is about 266.2030503445.

It can be divided in two parts, 1886 and 4230, that added together give a palindrome (6116).

The spelling of 18864230 in words is "eighteen million, eight hundred sixty-four thousand, two hundred thirty".