18285036 has 108 divisors (see below), whose sum is σ = 54765144. Its totient is φ = 4730880.

The previous prime is 18285031. The next prime is 18285061. The reversal of 18285036 is 63058281.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 18284988 and 18285006.

It is not an unprimeable number, because it can be changed into a prime (18285031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 71020 + ... + 71276.

Almost surely, 2^18285036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18285036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27382572).

18285036 is an abundant number, since it is smaller than the sum of its proper divisors (36480108).

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

18285036 is a wasteful number, since it uses less digits than its factorization.

18285036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 18285036 is about 4276.1005600898. The cubic root of 18285036 is about 263.4502448703.

The spelling of 18285036 in words is "eighteen million, two hundred eighty-five thousand, thirty-six".