28276801 has 4 divisors (see below), whose sum is σ = 32316352. Its totient is φ = 24237252.

The previous prime is 28276777. The next prime is 28276819. The reversal of 28276801 is 10867282.

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 a cyclic number.

It is not a de Polignac number, because 28276801 - 2¹³ = 28268609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28276841) by changing a digit.

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, 2019765 + ... + 2019778.

It is an arithmetic number, because the mean of its divisors is an integer number (8079088).

Almost surely, 2^28276801 is an apocalyptic number.

It is an amenable number.

28276801 is a deficient number, since it is larger than the sum of its proper divisors (4039551).

28276801 is an equidigital number, since it uses as much as digits as its factorization.

28276801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4039550.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 28276801 is about 5317.5935346734. The cubic root of 28276801 is about 304.6562498267.

The spelling of 28276801 in words is "twenty-eight million, two hundred seventy-six thousand, eight hundred one".