28327799 has 2 divisors, whose sum is σ = 28327800. Its totient is φ = 28327798.

The previous prime is 28327787. The next prime is 28327807. The reversal of 28327799 is 99772382.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28327799 is a prime.

It is a super-3 number, since 3×28327799³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28317799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14163899 + 14163900.

It is an arithmetic number, because the mean of its divisors is an integer number (14163900).

Almost surely, 2^28327799 is an apocalyptic number.

28327799 is a deficient number, since it is larger than the sum of its proper divisors (1).

28327799 is an equidigital number, since it uses as much as digits as its factorization.

28327799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 28327799 is about 5322.3865887401. The cubic root of 28327799 is about 304.8392918475.

It can be divided in two parts, 283 and 27799, that added together give a palindrome (28082).

The spelling of 28327799 in words is "twenty-eight million, three hundred twenty-seven thousand, seven hundred ninety-nine".