2779258212 has 72 divisors (see below), whose sum is σ = 7404269600. Its totient is φ = 876572928.

The previous prime is 2779258177. The next prime is 2779258217. The reversal of 2779258212 is 2128529772.

It is not an unprimeable number, because it can be changed into a prime (2779258217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 688143 + ... + 692169.

Almost surely, 2^2779258212 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 2779258212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3702134800).

2779258212 is an abundant number, since it is smaller than the sum of its proper divisors (4625011388).

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

2779258212 is a wasteful number, since it uses less digits than its factorization.

2779258212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5065 (or 5060 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 2779258212 is about 52718.6704308825. The cubic root of 2779258212 is about 1405.9707938008.

The spelling of 2779258212 in words is "two billion, seven hundred seventy-nine million, two hundred fifty-eight thousand, two hundred twelve".