2103504400 has 30 divisors (see below), whose sum is σ = 5053670282. Its totient is φ = 841401600.

The previous prime is 2103504397. The next prime is 2103504407. The reversal of 2103504400 is 44053012.

It can be written as a sum of positive squares in 3 ways, for example, as 192765456 + 1910738944 = 13884^2 + 43712^2 .

It is not an unprimeable number, because it can be changed into a prime (2103504407) 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, 2628981 + ... + 2629780.

Almost surely, 2^2103504400 is an apocalyptic number.

2103504400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2103504400 is an abundant number, since it is smaller than the sum of its proper divisors (2950165882).

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

2103504400 is a wasteful number, since it uses less digits than its factorization.

2103504400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5258779 (or 5258768 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2103504400 is about 45863.9771498286. The cubic root of 2103504400 is about 1281.2910963618.

Adding to 2103504400 its reverse (44053012), we get a palindrome (2147557412).

The spelling of 2103504400 in words is "two billion, one hundred three million, five hundred four thousand, four hundred".