2102004 has 24 divisors (see below), whose sum is σ = 5449920. Its totient is φ = 700632.

The previous prime is 2101961. The next prime is 2102021. The reversal of 2102004 is 4002012.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9624 + ... + 9839.

It is an arithmetic number, because the mean of its divisors is an integer number (227080).

2^2102004 is an apocalyptic number.

It is an amenable number.

2102004 is an abundant number, since it is smaller than the sum of its proper divisors (3347916).

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

2102004 is a wasteful number, since it uses less digits than its factorization.

2102004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19476 (or 19468 counting only the distinct ones).

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

The square root of 2102004 is about 1449.8289554289. The cubic root of 2102004 is about 128.0986381616.

Adding to 2102004 its reverse (4002012), we get a palindrome (6104016).

The spelling of 2102004 in words is "two million, one hundred two thousand, four".