18868230 has 24 divisors (see below), whose sum is σ = 49057632. Its totient is φ = 5031504.

The previous prime is 18868229. The next prime is 18868231. The reversal of 18868230 is 3286881.

It is an interprime number because it is at equal distance from previous prime (18868229) and next prime (18868231).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18868231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104734 + ... + 104913.

It is an arithmetic number, because the mean of its divisors is an integer number (2044068).

Almost surely, 2^18868230 is an apocalyptic number.

18868230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18868230 is an abundant number, since it is smaller than the sum of its proper divisors (30189402).

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

18868230 is a wasteful number, since it uses less digits than its factorization.

18868230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209660 (or 209657 counting only the distinct ones).

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

The square root of 18868230 is about 4343.7575899214. The cubic root of 18868230 is about 266.2218643813.

The spelling of 18868230 in words is "eighteen million, eight hundred sixty-eight thousand, two hundred thirty".