28279583 has 2 divisors, whose sum is σ = 28279584. Its totient is φ = 28279582.

The previous prime is 28279579. The next prime is 28279607. The reversal of 28279583 is 38597282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28279583 - 2² = 28279579 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28272583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14139791 + 14139792.

It is an arithmetic number, because the mean of its divisors is an integer number (14139792).

Almost surely, 2^28279583 is an apocalyptic number.

28279583 is a deficient number, since it is larger than the sum of its proper divisors (1).

28279583 is an equidigital number, since it uses as much as digits as its factorization.

28279583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 28279583 is about 5317.8551127311. The cubic root of 28279583 is about 304.6662406539. Note that the first 3 decimals are identical.

The spelling of 28279583 in words is "twenty-eight million, two hundred seventy-nine thousand, five hundred eighty-three".