204012 has 24 divisors (see below), whose sum is σ = 529200. Its totient is φ = 67968.

The previous prime is 204007. The next prime is 204013. The reversal of 204012 is 210402.

It is a super-2 number, since 2×204012² = 83241792288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 203985 and 204003.

It is not an unprimeable number, because it can be changed into a prime (204013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 837 + ... + 1052.

It is an arithmetic number, because the mean of its divisors is an integer number (22050).

2²⁰⁴⁰¹² is an apocalyptic number.

It is an amenable number.

204012 is an abundant number, since it is smaller than the sum of its proper divisors (325188).

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

204012 is a wasteful number, since it uses less digits than its factorization.

204012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902 (or 1894 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 204012 is about 451.6768756534. The cubic root of 204012 is about 58.8688074139.

Adding to 204012 its reverse (210402), we get a palindrome (414414).

The spelling of 204012 in words is "two hundred four thousand, twelve", and thus it is an iban number.