2809845228 has 12 divisors (see below), whose sum is σ = 6556305560. Its totient is φ = 936615072.

The previous prime is 2809845223. The next prime is 2809845299. The reversal of 2809845228 is 8225489082.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2809845223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117076873 + ... + 117076896.

Almost surely, 2^2809845228 is an apocalyptic number.

It is an amenable number.

2809845228 is an abundant number, since it is smaller than the sum of its proper divisors (3746460332).

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

2809845228 is a wasteful number, since it uses less digits than its factorization.

2809845228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234153776 (or 234153774 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 48.

The square root of 2809845228 is about 53007.9732493141. The cubic root of 2809845228 is about 1411.1097726447.

The spelling of 2809845228 in words is "two billion, eight hundred nine million, eight hundred forty-five thousand, two hundred twenty-eight".