2193805240 has 64 divisors (see below), whose sum is σ = 5437186560. Its totient is φ = 789985920.

The previous prime is 2193805231. The next prime is 2193805259. The reversal of 2193805240 is 425083912.

It is a junction number, because it is equal to n+sod(n) for n = 2193805196 and 2193805205.

It is a congruent number.

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, 21117 + ... + 69523.

It is an arithmetic number, because the mean of its divisors is an integer number (84956040).

Almost surely, 2^2193805240 is an apocalyptic number.

2193805240 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 2193805240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2718593280).

2193805240 is an abundant number, since it is smaller than the sum of its proper divisors (3243381320).

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

2193805240 is a wasteful number, since it uses less digits than its factorization.

2193805240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48532 (or 48528 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 2193805240 is about 46838.0746828902. The cubic root of 2193805240 is about 1299.3695641416.

The spelling of 2193805240 in words is "two billion, one hundred ninety-three million, eight hundred five thousand, two hundred forty".