28689327 has 6 divisors (see below), whose sum is σ = 41440152. Its totient is φ = 19126212.

The previous prime is 28689289. The next prime is 28689329. The reversal of 28689327 is 72398682.

It is not a de Polignac number, because 28689327 - 2⁶ = 28689263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28689329) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1593843 + ... + 1593860.

It is an arithmetic number, because the mean of its divisors is an integer number (6906692).

Almost surely, 2^28689327 is an apocalyptic number.

28689327 is a deficient number, since it is larger than the sum of its proper divisors (12750825).

28689327 is a wasteful number, since it uses less digits than its factorization.

28689327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3187709 (or 3187706 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 28689327 is about 5356.2418728060. The cubic root of 28689327 is about 306.1306311410.

The spelling of 28689327 in words is "twenty-eight million, six hundred eighty-nine thousand, three hundred twenty-seven".