18036284 has 12 divisors (see below), whose sum is σ = 36072624. Its totient is φ = 7729824.

The previous prime is 18036247. The next prime is 18036287. The reversal of 18036284 is 48263081.

18036284 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18036284.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18036287) 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, 322049 + ... + 322104.

It is an arithmetic number, because the mean of its divisors is an integer number (3006052).

Almost surely, 2^18036284 is an apocalyptic number.

18036284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18036284 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18036284 is a wasteful number, since it uses less digits than its factorization.

18036284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644164 (or 644162 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 18036284 is about 4246.9146447745. The cubic root of 18036284 is about 262.2501156396.

The spelling of 18036284 in words is "eighteen million, thirty-six thousand, two hundred eighty-four".