28200839 has 2 divisors, whose sum is σ = 28200840. Its totient is φ = 28200838.

The previous prime is 28200833. The next prime is 28200853. The reversal of 28200839 is 93800282.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28200839 - 2¹² = 28196743 is a prime.

It is a Chen prime.

It is equal to p_1753097 and since 28200839 and 1753097 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28200833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14100419 + 14100420.

It is an arithmetic number, because the mean of its divisors is an integer number (14100420).

Almost surely, 2^28200839 is an apocalyptic number.

28200839 is a deficient number, since it is larger than the sum of its proper divisors (1).

28200839 is an equidigital number, since it uses as much as digits as its factorization.

28200839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 28200839 is about 5310.4462147733. The cubic root of 28200839 is about 304.3831985249.

The spelling of 28200839 in words is "twenty-eight million, two hundred thousand, eight hundred thirty-nine".