28339475 has 6 divisors (see below), whose sum is σ = 35140980. Its totient is φ = 22671560.

The previous prime is 28339463. The next prime is 28339499. The reversal of 28339475 is 57493382.

It is not a de Polignac number, because 28339475 - 2¹⁸ = 28077331 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 566765 + ... + 566814.

It is an arithmetic number, because the mean of its divisors is an integer number (5856830).

Almost surely, 2^28339475 is an apocalyptic number.

28339475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28339475 is a deficient number, since it is larger than the sum of its proper divisors (6801505).

28339475 is a wasteful number, since it uses less digits than its factorization.

28339475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133589 (or 1133584 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The square root of 28339475 is about 5323.4833520919. The cubic root of 28339475 is about 304.8811684351.

The spelling of 28339475 in words is "twenty-eight million, three hundred thirty-nine thousand, four hundred seventy-five".