2102604804 has 120 divisors (see below), whose sum is σ = 5701516128. Its totient is φ = 675181440.

The previous prime is 2102604799. The next prime is 2102604811. The reversal of 2102604804 is 4084062012.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1101619 + ... + 1103525.

Almost surely, 2^2102604804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102604804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2850758064).

2102604804 is an abundant number, since it is smaller than the sum of its proper divisors (3598911324).

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

2102604804 is a wasteful number, since it uses less digits than its factorization.

2102604804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047 (or 2036 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 2102604804 is about 45854.1688835377. The cubic root of 2102604804 is about 1281.1084157044.

Adding to 2102604804 its reverse (4084062012), we get a palindrome (6186666816).

The spelling of 2102604804 in words is "two billion, one hundred two million, six hundred four thousand, eight hundred four".