18036912 has 30 divisors (see below), whose sum is σ = 46671492. Its totient is φ = 6002496.

The previous prime is 18036877. The next prime is 18036923. The reversal of 18036912 is 21963081.

It is a self number, because there is not a number n which added to its sum of digits gives 18036912.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29118 + ... + 29730.

Almost surely, 2^18036912 is an apocalyptic number.

18036912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18036912 is an abundant number, since it is smaller than the sum of its proper divisors (28634580).

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

18036912 is an frugal number, since it uses more digits than its factorization.

18036912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 18036912 is about 4246.9885801589. The cubic root of 18036912 is about 262.2531593405.

Adding to 18036912 its reverse (21963081), we get a palindrome (39999993).

The spelling of 18036912 in words is "eighteen million, thirty-six thousand, nine hundred twelve".