2773266444 has 96 divisors (see below), whose sum is σ = 7874496000. Its totient is φ = 838824768.

The previous prime is 2773266427. The next prime is 2773266493. The reversal of 2773266444 is 4446623772.

It is a self number, because there is not a number n which added to its sum of digits gives 2773266444.

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, 66097 + ... + 99575.

It is an arithmetic number, because the mean of its divisors is an integer number (82026000).

Almost surely, 2^2773266444 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 2773266444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3937248000).

2773266444 is an abundant number, since it is smaller than the sum of its proper divisors (5101229556).

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

2773266444 is a wasteful number, since it uses less digits than its factorization.

2773266444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33564 (or 33556 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 45.

The square root of 2773266444 is about 52661.8120083235. The cubic root of 2773266444 is about 1404.9596952340.

The spelling of 2773266444 in words is "two billion, seven hundred seventy-three million, two hundred sixty-six thousand, four hundred forty-four".