2103204400 has 60 divisors (see below), whose sum is σ = 5512319064. Its totient is φ = 764800000.

The previous prime is 2103204391. The next prime is 2103204427. The reversal of 2103204400 is 44023012.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234601 + ... + 243400.

Almost surely, 2^2103204400 is an apocalyptic number.

2103204400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2103204400 is an abundant number, since it is smaller than the sum of its proper divisors (3409114664).

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

2103204400 is a wasteful number, since it uses less digits than its factorization.

2103204400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478030 (or 478019 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2103204400 is about 45860.7064925956. The cubic root of 2103204400 is about 1281.2301812520.

Adding to 2103204400 its reverse (44023012), we get a palindrome (2147227412).

The spelling of 2103204400 in words is "two billion, one hundred three million, two hundred four thousand, four hundred".