2108738240 has 112 divisors (see below), whose sum is σ = 5879006784. Its totient is φ = 705331200.

The previous prime is 2108738239. The next prime is 2108738251. The reversal of 2108738240 is 428378012.

It is a Cunningham number, because it is equal to 45921²-1.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2108738240.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80360 + ... + 103320.

It is an arithmetic number, because the mean of its divisors is an integer number (52491132).

Almost surely, 2^2108738240 is an apocalyptic number.

2108738240 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 2108738240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2939503392).

2108738240 is an abundant number, since it is smaller than the sum of its proper divisors (3770268544).

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

2108738240 is a wasteful number, since it uses less digits than its factorization.

2108738240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23026 (or 23016 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 2108738240 is about 45920.9999891117. Note that the first 4 decimals coincide. The cubic root of 2108738240 is about 1282.3528988086.

The spelling of 2108738240 in words is "two billion, one hundred eight million, seven hundred thirty-eight thousand, two hundred forty".