28864675 has 18 divisors (see below), whose sum is σ = 41637588. Its totient is φ = 19792080.

The previous prime is 28864673. The next prime is 28864723. The reversal of 28864675 is 57646882.

It is not a de Polignac number, because 28864675 - 2¹ = 28864673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28864673) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10557 + ... + 13006.

Almost surely, 2^28864675 is an apocalyptic number.

28864675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28864675 is a deficient number, since it is larger than the sum of its proper divisors (12772913).

28864675 is a wasteful number, since it uses less digits than its factorization.

28864675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23587 (or 23575 counting only the distinct ones).

The product of its digits is 645120, while the sum is 46.

The square root of 28864675 is about 5372.5855042056. The cubic root of 28864675 is about 306.7530507799.

The spelling of 28864675 in words is "twenty-eight million, eight hundred sixty-four thousand, six hundred seventy-five".