28336399 has 24 divisors (see below), whose sum is σ = 37156320. Its totient is φ = 21086208.

The previous prime is 28336379. The next prime is 28336411. The reversal of 28336399 is 99363382.

It is a happy number.

It is not a de Polignac number, because 28336399 - 2⁷ = 28336271 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 (28336309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19407 + ... + 20815.

It is an arithmetic number, because the mean of its divisors is an integer number (1548180).

Almost surely, 2^28336399 is an apocalyptic number.

28336399 is a deficient number, since it is larger than the sum of its proper divisors (8819921).

28336399 is a wasteful number, since it uses less digits than its factorization.

28336399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459 (or 1446 counting only the distinct ones).

The product of its digits is 209952, while the sum is 43.

The square root of 28336399 is about 5323.1944356749. The cubic root of 28336399 is about 304.8701373156.

The spelling of 28336399 in words is "twenty-eight million, three hundred thirty-six thousand, three hundred ninety-nine".