18836236 has 24 divisors (see below), whose sum is σ = 34107920. Its totient is φ = 9096192.

The previous prime is 18836183. The next prime is 18836249. The reversal of 18836236 is 63263881.

It is a junction number, because it is equal to n+sod(n) for n = 18836195 and 18836204.

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, 16120 + ... + 17248.

Almost surely, 2^18836236 is an apocalyptic number.

It is an amenable number.

18836236 is a deficient number, since it is larger than the sum of its proper divisors (15271684).

18836236 is a wasteful number, since it uses less digits than its factorization.

18836236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273 (or 1271 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 18836236 is about 4340.0732712709. The cubic root of 18836236 is about 266.0713058124.

The spelling of 18836236 in words is "eighteen million, eight hundred thirty-six thousand, two hundred thirty-six".