18288230 has 32 divisors (see below), whose sum is σ = 33868800. Its totient is φ = 7107552.

The previous prime is 18288211. The next prime is 18288247. The reversal of 18288230 is 3288281.

It is a super-3 number, since 3×18288230³ (a number of 23 digits) contains 333 as substring.

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, 81899 + ... + 82121.

It is an arithmetic number, because the mean of its divisors is an integer number (1058400).

Almost surely, 2^18288230 is an apocalyptic number.

18288230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18288230 is a deficient number, since it is larger than the sum of its proper divisors (15580570).

18288230 is a wasteful number, since it uses less digits than its factorization.

18288230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 18288230 is about 4276.4740148866. The cubic root of 18288230 is about 263.4655836623.

The spelling of 18288230 in words is "eighteen million, two hundred eighty-eight thousand, two hundred thirty".