18285012 has 18 divisors (see below), whose sum is σ = 46220538. Its totient is φ = 6094992.

The previous prime is 18284989. The next prime is 18285031. The reversal of 18285012 is 21058281.

It can be written as a sum of positive squares in only one way, i.e., 15023376 + 3261636 = 3876^2 + 1806^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

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, 253923 + ... + 253994.

Almost surely, 2^18285012 is an apocalyptic number.

18285012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18285012 is an abundant number, since it is smaller than the sum of its proper divisors (27935526).

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

18285012 is a wasteful number, since it uses less digits than its factorization.

18285012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507927 (or 507922 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 18285012 is about 4276.0977537938. The cubic root of 18285012 is about 263.4501296065.

The spelling of 18285012 in words is "eighteen million, two hundred eighty-five thousand, twelve".