28339653 has 4 divisors (see below), whose sum is σ = 37786208. Its totient is φ = 18893100.

The previous prime is 28339643. The next prime is 28339667. The reversal of 28339653 is 35693382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28339653 - 2⁶ = 28339589 is a prime.

It is the 5324-th Hogben number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28339613) by changing a digit.

It is a nontrivial repunit in base 5323.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4723273 + ... + 4723278.

It is an arithmetic number, because the mean of its divisors is an integer number (9446552).

Almost surely, 2^28339653 is an apocalyptic number.

It is an amenable number.

28339653 is a deficient number, since it is larger than the sum of its proper divisors (9446555).

28339653 is an equidigital number, since it uses as much as digits as its factorization.

28339653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9446554.

The product of its digits is 116640, while the sum is 39.

The square root of 28339653 is about 5323.5000704424. The cubic root of 28339653 is about 304.8818067524.

The spelling of 28339653 in words is "twenty-eight million, three hundred thirty-nine thousand, six hundred fifty-three".