5628208309 has 4 divisors (see below), whose sum is σ = 5959279404. Its totient is φ = 5297137216.

The previous prime is 5628208283. The next prime is 5628208331. The reversal of 5628208309 is 9038028265.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2610903409 + 3017304900 = 51097^2 + 54930^2 .

It is a cyclic number.

It is not a de Polignac number, because 5628208309 - 2¹³ = 5628200117 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 (5628208109) 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, 165535522 + ... + 165535555.

It is an arithmetic number, because the mean of its divisors is an integer number (1489819851).

Almost surely, 2^5628208309 is an apocalyptic number.

It is an amenable number.

5628208309 is a deficient number, since it is larger than the sum of its proper divisors (331071095).

5628208309 is a wasteful number, since it uses less digits than its factorization.

5628208309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331071094.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 5628208309 is about 75021.3856776853. The cubic root of 5628208309 is about 1778.7847098417.

The spelling of 5628208309 in words is "five billion, six hundred twenty-eight million, two hundred eight thousand, three hundred nine".