28204339 has 2 divisors, whose sum is σ = 28204340. Its totient is φ = 28204338.

The previous prime is 28204333. The next prime is 28204349. The reversal of 28204339 is 93340282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28204339 - 2³ = 28204331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28204339.

It is not a weakly prime, because it can be changed into another prime (28204331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14102169 + 14102170.

It is an arithmetic number, because the mean of its divisors is an integer number (14102170).

Almost surely, 2^28204339 is an apocalyptic number.

28204339 is a deficient number, since it is larger than the sum of its proper divisors (1).

28204339 is an equidigital number, since it uses as much as digits as its factorization.

28204339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 28204339 is about 5310.7757437120. The cubic root of 28204339 is about 304.3957903149.

The spelling of 28204339 in words is "twenty-eight million, two hundred four thousand, three hundred thirty-nine".