28364817 has 16 divisors (see below), whose sum is σ = 41400128. Its totient is φ = 17167680.

The previous prime is 28364797. The next prime is 28364839. The reversal of 28364817 is 71846382.

It is not a de Polignac number, because 28364817 - 2⁷ = 28364689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28364867) 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, 3583 + ... + 8340.

It is an arithmetic number, because the mean of its divisors is an integer number (2587508).

Almost surely, 2^28364817 is an apocalyptic number.

It is an amenable number.

28364817 is a deficient number, since it is larger than the sum of its proper divisors (13035311).

28364817 is a wasteful number, since it uses less digits than its factorization.

28364817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12000.

The product of its digits is 64512, while the sum is 39.

The square root of 28364817 is about 5325.8630286555. The cubic root of 28364817 is about 304.9720192911.

The spelling of 28364817 in words is "twenty-eight million, three hundred sixty-four thousand, eight hundred seventeen".