2784228642 has 48 divisors (see below), whose sum is σ = 6505120440. Its totient is φ = 855553536.

The previous prime is 2784228641. The next prime is 2784228649. The reversal of 2784228642 is 2468224872.

It can be written as a sum of positive squares in 4 ways, for example, as 2377440081 + 406788561 = 48759^2 + 20169^2 .

It is not an unprimeable number, because it can be changed into a prime (2784228641) 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, 179034 + ... + 193962.

Almost surely, 2^2784228642 is an apocalyptic number.

2784228642 is an abundant number, since it is smaller than the sum of its proper divisors (3720891798).

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

2784228642 is a wasteful number, since it uses less digits than its factorization.

2784228642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15747 (or 15744 counting only the distinct ones).

The product of its digits is 688128, while the sum is 45.

The square root of 2784228642 is about 52765.7904517690. The cubic root of 2784228642 is about 1406.8084414828.

The spelling of 2784228642 in words is "two billion, seven hundred eighty-four million, two hundred twenty-eight thousand, six hundred forty-two".