2681780244 has 96 divisors (see below), whose sum is σ = 7376417664. Its totient is φ = 747601920.

The previous prime is 2681780207. The next prime is 2681780273. The reversal of 2681780244 is 4420871862.

2681780244 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2681780196 and 2681780205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 534612 + ... + 539604.

It is an arithmetic number, because the mean of its divisors is an integer number (76837684).

Almost surely, 2^2681780244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2681780244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3688208832).

2681780244 is an abundant number, since it is smaller than the sum of its proper divisors (4694637420).

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

2681780244 is a wasteful number, since it uses less digits than its factorization.

2681780244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5337 (or 5335 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The square root of 2681780244 is about 51785.9077742198. The cubic root of 2681780244 is about 1389.3374072321.

The spelling of 2681780244 in words is "two billion, six hundred eighty-one million, seven hundred eighty thousand, two hundred forty-four".