18357230 has 32 divisors (see below), whose sum is σ = 35251200. Its totient is φ = 6862752.

The previous prime is 18357191. The next prime is 18357257. The reversal of 18357230 is 3275381.

It is a junction number, because it is equal to n+sod(n) for n = 18357193 and 18357202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14399 + ... + 15621.

It is an arithmetic number, because the mean of its divisors is an integer number (1101600).

Almost surely, 2^18357230 is an apocalyptic number.

18357230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18357230 is a deficient number, since it is larger than the sum of its proper divisors (16893970).

18357230 is a wasteful number, since it uses less digits than its factorization.

18357230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 18357230 is about 4284.5338136138. The cubic root of 18357230 is about 263.7965125400.

The spelling of 18357230 in words is "eighteen million, three hundred fifty-seven thousand, two hundred thirty".