2782444221 has 12 divisors (see below), whose sum is σ = 4019809248. Its totient is φ = 1854629064.

The previous prime is 2782444211. The next prime is 2782444229. The reversal of 2782444221 is 1224442872.

It is not a de Polignac number, because 2782444221 - 2⁹ = 2782443709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2782444229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31686 + ... + 81048.

It is an arithmetic number, because the mean of its divisors is an integer number (334984104).

Almost surely, 2^2782444221 is an apocalyptic number.

It is an amenable number.

2782444221 is a deficient number, since it is larger than the sum of its proper divisors (1237365027).

2782444221 is a wasteful number, since it uses less digits than its factorization.

2782444221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55632 (or 55629 counting only the distinct ones).

The product of its digits is 57344, while the sum is 36.

The square root of 2782444221 is about 52748.8788601237. The cubic root of 2782444221 is about 1406.5078345841.

The spelling of 2782444221 in words is "two billion, seven hundred eighty-two million, four hundred forty-four thousand, two hundred twenty-one".