18836230 has 16 divisors (see below), whose sum is σ = 38748960. Its totient is φ = 6458112.

The previous prime is 18836183. The next prime is 18836249. The reversal of 18836230 is 3263881.

It is a super-2 number, since 2×18836230² = 709607121225800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18836192 and 18836201.

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 7 ways as a sum of consecutive naturals, for example, 134475 + ... + 134614.

It is an arithmetic number, because the mean of its divisors is an integer number (2421810).

Almost surely, 2^18836230 is an apocalyptic number.

18836230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18836230 is an abundant number, since it is smaller than the sum of its proper divisors (19912730).

18836230 is a wasteful number, since it uses less digits than its factorization.

18836230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269103.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 18836230 is about 4340.0725800383. The cubic root of 18836230 is about 266.0712775614.

The spelling of 18836230 in words is "eighteen million, eight hundred thirty-six thousand, two hundred thirty".