28339065 has 40 divisors (see below), whose sum is σ = 51226560. Its totient is φ = 14987808.

The previous prime is 28339037. The next prime is 28339067. The reversal of 28339065 is 56093382.

It is not a de Polignac number, because 28339065 - 2⁵ = 28339033 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28339067) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 67426 + ... + 67844.

It is an arithmetic number, because the mean of its divisors is an integer number (1280664).

Almost surely, 2^28339065 is an apocalyptic number.

It is an amenable number.

28339065 is a deficient number, since it is larger than the sum of its proper divisors (22887495).

28339065 is a wasteful number, since it uses less digits than its factorization.

28339065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 28339065 is about 5323.4448433322. Note that the first 3 decimals coincide. The cubic root of 28339065 is about 304.8796981434.

The spelling of 28339065 in words is "twenty-eight million, three hundred thirty-nine thousand, sixty-five".