2100444400 has 60 divisors (see below), whose sum is σ = 5059665000. Its totient is φ = 837955840.

The previous prime is 2100444383. The next prime is 2100444413. The reversal of 2100444400 is 44440012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148851 + ... + 162349.

It is an arithmetic number, because the mean of its divisors is an integer number (84327750).

Almost surely, 2^2100444400 is an apocalyptic number.

2100444400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2100444400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2529832500).

2100444400 is an abundant number, since it is smaller than the sum of its proper divisors (2959220600).

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

2100444400 is a wasteful number, since it uses less digits than its factorization.

2100444400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13906 (or 13895 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 2100444400 is about 45830.6054945819. The cubic root of 2100444400 is about 1280.6694902640.

Adding to 2100444400 its reverse (44440012), we get a palindrome (2144884412).

The spelling of 2100444400 in words is "two billion, one hundred million, four hundred forty-four thousand, four hundred".