18507230 has 32 divisors (see below), whose sum is σ = 38223360. Its totient is φ = 6320160.

The previous prime is 18507227. The next prime is 18507241. The reversal of 18507230 is 3270581.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18507230.

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, 29015 + ... + 29645.

It is an arithmetic number, because the mean of its divisors is an integer number (1194480).

Almost surely, 2^18507230 is an apocalyptic number.

18507230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18507230 is an abundant number, since it is smaller than the sum of its proper divisors (19716130).

18507230 is a wasteful number, since it uses less digits than its factorization.

18507230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 18507230 is about 4302.0030218492. The cubic root of 18507230 is about 264.5130728492.

Subtracting from 18507230 its sum of digits (26), we obtain a square (18507204 = 4302²).

The spelling of 18507230 in words is "eighteen million, five hundred seven thousand, two hundred thirty".