28439159 has 8 divisors (see below), whose sum is σ = 33165600. Its totient is φ = 24376128.

The previous prime is 28439153. The next prime is 28439161. The reversal of 28439159 is 95193482.

It is a de Polignac number, because none of the positive numbers 2^k-28439159 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 (28439153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41114 + ... + 41799.

It is an arithmetic number, because the mean of its divisors is an integer number (4145700).

Almost surely, 2^28439159 is an apocalyptic number.

28439159 is a deficient number, since it is larger than the sum of its proper divisors (4726441).

28439159 is an frugal number, since it uses more digits than its factorization.

28439159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82934 (or 82920 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 28439159 is about 5332.8377998960. The cubic root of 28439159 is about 305.2382229153.

The spelling of 28439159 in words is "twenty-eight million, four hundred thirty-nine thousand, one hundred fifty-nine".