2012004 has 18 divisors (see below), whose sum is σ = 5085990. Its totient is φ = 670656.

The previous prime is 2011987. The next prime is 2012009. The reversal of 2012004 is 4002102.

It can be written as a sum of positive squares in only one way, i.e., 1954404 + 57600 = 1398^2 + 240^2 .

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

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

It is not an unprimeable number, because it can be changed into a prime (2012009) 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, 27909 + ... + 27980.

It is an arithmetic number, because the mean of its divisors is an integer number (282555).

2^2012004 is an apocalyptic number.

It is an amenable number.

2012004 is an abundant number, since it is smaller than the sum of its proper divisors (3073986).

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

2012004 is a wasteful number, since it uses less digits than its factorization.

2012004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55899 (or 55894 counting only the distinct ones).

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

The square root of 2012004 is about 1418.4512681090. The cubic root of 2012004 is about 126.2436705646.

Adding to 2012004 its reverse (4002102), we get a palindrome (6014106).

The spelling of 2012004 in words is "two million, twelve thousand, four".