28339299 has 12 divisors (see below), whose sum is σ = 42041376. Its totient is φ = 18382032.

The previous prime is 28339273. The next prime is 28339307. The reversal of 28339299 is 99293382.

28339299 is a `hidden beast` number, since 28 + 339 + 299 = 666.

It is not a de Polignac number, because 28339299 - 2⁹ = 28338787 is a prime.

It is a super-2 number, since 2×28339299² = 1606231735622802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28339499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42219 + ... + 42884.

It is an arithmetic number, because the mean of its divisors is an integer number (3503448).

Almost surely, 2^28339299 is an apocalyptic number.

28339299 is a deficient number, since it is larger than the sum of its proper divisors (13702077).

28339299 is a wasteful number, since it uses less digits than its factorization.

28339299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85146 (or 85143 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 28339299 is about 5323.4668215365. The cubic root of 28339299 is about 304.8805372872.

The spelling of 28339299 in words is "twenty-eight million, three hundred thirty-nine thousand, two hundred ninety-nine".