2780839212 has 24 divisors (see below), whose sum is σ = 6598603200. Its totient is φ = 911235216.

The previous prime is 2780839199. The next prime is 2780839223. The reversal of 2780839212 is 2129380872.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1963162 + ... + 1964577.

It is an arithmetic number, because the mean of its divisors is an integer number (274941800).

Almost surely, 2^2780839212 is an apocalyptic number.

It is an amenable number.

2780839212 is an abundant number, since it is smaller than the sum of its proper divisors (3817763988).

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

2780839212 is a wasteful number, since it uses less digits than its factorization.

2780839212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927805 (or 3927803 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 2780839212 is about 52733.6629867488. The cubic root of 2780839212 is about 1406.2373419582.

The spelling of 2780839212 in words is "two billion, seven hundred eighty million, eight hundred thirty-nine thousand, two hundred twelve".