28276617 has 16 divisors (see below), whose sum is σ = 39813120. Its totient is φ = 17802000.

The previous prime is 28276609. The next prime is 28276639. The reversal of 28276617 is 71667282.

It is not a de Polignac number, because 28276617 - 2³ = 28276609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28276687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23992 + ... + 25142.

It is an arithmetic number, because the mean of its divisors is an integer number (2488320).

Almost surely, 2^28276617 is an apocalyptic number.

It is an amenable number.

28276617 is a deficient number, since it is larger than the sum of its proper divisors (11536503).

28276617 is a wasteful number, since it uses less digits than its factorization.

28276617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604.

The product of its digits is 56448, while the sum is 39.

The square root of 28276617 is about 5317.5762335861. The cubic root of 28276617 is about 304.6555890156.

The spelling of 28276617 in words is "twenty-eight million, two hundred seventy-six thousand, six hundred seventeen".