28364159 has 4 divisors (see below), whose sum is σ = 28377216. Its totient is φ = 28351104.

The previous prime is 28364153. The next prime is 28364173. The reversal of 28364159 is 95146382.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28364159 - 2¹⁶ = 28298623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28364153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2399 + ... + 7904.

It is an arithmetic number, because the mean of its divisors is an integer number (7094304).

Almost surely, 2^28364159 is an apocalyptic number.

28364159 is a deficient number, since it is larger than the sum of its proper divisors (13057).

28364159 is a wasteful number, since it uses less digits than its factorization.

28364159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13056.

The product of its digits is 51840, while the sum is 38.

The square root of 28364159 is about 5325.8012542715. The cubic root of 28364159 is about 304.9696610510.

The spelling of 28364159 in words is "twenty-eight million, three hundred sixty-four thousand, one hundred fifty-nine".