2103730720 has 144 divisors (see below), whose sum is σ = 6226535448. Its totient is φ = 665763840.

The previous prime is 2103730709. The next prime is 2103730721. The reversal of 2103730720 is 270373012.

It can be written as a sum of positive squares in 4 ways, for example, as 919544976 + 1184185744 = 30324^2 + 34412^2 .

It is not an unprimeable number, because it can be changed into a prime (2103730721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91600 + ... + 112240.

Almost surely, 2^2103730720 is an apocalyptic number.

2103730720 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 2103730720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3113267724).

2103730720 is an abundant number, since it is smaller than the sum of its proper divisors (4122804728).

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

2103730720 is a wasteful number, since it uses less digits than its factorization.

2103730720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20683 (or 20668 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 2103730720 is about 45866.4443793063. Note that the first 3 decimals coincide. The cubic root of 2103730720 is about 1281.3370468879.

The spelling of 2103730720 in words is "two billion, one hundred three million, seven hundred thirty thousand, seven hundred twenty".