2728809333 has 6 divisors (see below), whose sum is σ = 3941613494. Its totient is φ = 1819206216.

The previous prime is 2728809329. The next prime is 2728809341. The reversal of 2728809333 is 3339088272.

It is a happy number.

2728809333 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1376261604 + 1352547729 = 37098^2 + 36777^2 .

It is not a de Polignac number, because 2728809333 - 2² = 2728809329 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728809313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 151600510 + ... + 151600527.

Almost surely, 2^2728809333 is an apocalyptic number.

It is an amenable number.

2728809333 is a deficient number, since it is larger than the sum of its proper divisors (1212804161).

2728809333 is a wasteful number, since it uses less digits than its factorization.

2728809333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303201043 (or 303201040 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 2728809333 is about 52238.0065948156. The cubic root of 2728809333 is about 1397.4117712313.

The spelling of 2728809333 in words is "two billion, seven hundred twenty-eight million, eight hundred nine thousand, three hundred thirty-three".