2785128226 has 24 divisors (see below), whose sum is σ = 4378219776. Its totient is φ = 1327395960.

The previous prime is 2785128221. The next prime is 2785128271. The reversal of 2785128226 is 6228215872.

It is not an unprimeable number, because it can be changed into a prime (2785128221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 273315 + ... + 283321.

It is an arithmetic number, because the mean of its divisors is an integer number (182425824).

Almost surely, 2^2785128226 is an apocalyptic number.

2785128226 is a deficient number, since it is larger than the sum of its proper divisors (1593091550).

2785128226 is a wasteful number, since it uses less digits than its factorization.

2785128226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10174 (or 10107 counting only the distinct ones).

The product of its digits is 215040, while the sum is 43.

The square root of 2785128226 is about 52774.3140741782. The cubic root of 2785128226 is about 1406.9599383907.

The spelling of 2785128226 in words is "two billion, seven hundred eighty-five million, one hundred twenty-eight thousand, two hundred twenty-six".