18242336 has 24 divisors (see below), whose sum is σ = 41045760. Its totient is φ = 7818048.

The previous prime is 18242333. The next prime is 18242359. The reversal of 18242336 is 63324281.

It is a junction number, because it is equal to n+sod(n) for n = 18242299 and 18242308.

It is not an unprimeable number, because it can be changed into a prime (18242333) 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, 40496 + ... + 40943.

It is an arithmetic number, because the mean of its divisors is an integer number (1710240).

Almost surely, 2^18242336 is an apocalyptic number.

18242336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18242336 is an abundant number, since it is smaller than the sum of its proper divisors (22803424).

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

18242336 is an equidigital number, since it uses as much as digits as its factorization.

18242336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81456 (or 81448 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 18242336 is about 4271.1047751138. The cubic root of 18242336 is about 263.2450115952.

The spelling of 18242336 in words is "eighteen million, two hundred forty-two thousand, three hundred thirty-six".