2004012 has 18 divisors (see below), whose sum is σ = 5065788. Its totient is φ = 667992.

The previous prime is 2004007. The next prime is 2004017. The reversal of 2004012 is 2104002.

It is an interprime number because it is at equal distance from previous prime (2004007) and next prime (2004017).

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

It is a super-2 number, since 2×2004012² = 8032128192288, 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 = 2003985 and 2004003.

It is not an unprimeable number, because it can be changed into a prime (2004017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27798 + ... + 27869.

2^2004012 is an apocalyptic number.

It is an amenable number.

2004012 is an abundant number, since it is smaller than the sum of its proper divisors (3061776).

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

2004012 is a wasteful number, since it uses less digits than its factorization.

2004012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55677 (or 55672 counting only the distinct ones).

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

The square root of 2004012 is about 1415.6313079330. The cubic root of 2004012 is about 126.0762954401.

Adding to 2004012 its reverse (2104002), we get a palindrome (4108014).

The spelling of 2004012 in words is "two million, four thousand, twelve".