18806336 has 28 divisors (see below), whose sum is σ = 38526720. Its totient is φ = 9098880.

The previous prime is 18806303. The next prime is 18806339. The reversal of 18806336 is 63360881.

It is a happy number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18806296 and 18806305.

It is not an unprimeable number, because it can be changed into a prime (18806339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2756 + ... + 6723.

Almost surely, 2^18806336 is an apocalyptic number.

18806336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18806336 is an abundant number, since it is smaller than the sum of its proper divisors (19720384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18806336 is an equidigital number, since it uses as much as digits as its factorization.

18806336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9522 (or 9512 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 18806336 is about 4336.6272609022. The cubic root of 18806336 is about 265.9304470760.

The spelling of 18806336 in words is "eighteen million, eight hundred six thousand, three hundred thirty-six".