28338547239 has 24 divisors (see below), whose sum is σ = 44398422432. Its totient is φ = 17347361280.

The previous prime is 28338547231. The next prime is 28338547247. The reversal of 28338547239 is 93274583382.

28338547239 is a `hidden beast` number, since 28 + 3 + 385 + 4 + 7 + 239 = 666.

It is an interprime number because it is at equal distance from previous prime (28338547231) and next prime (28338547247).

It is not a de Polignac number, because 28338547239 - 2³ = 28338547231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28338547231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2252499 + ... + 2265044.

It is an arithmetic number, because the mean of its divisors is an integer number (1849934268).

Almost surely, 2^28338547239 is an apocalyptic number.

28338547239 is a deficient number, since it is larger than the sum of its proper divisors (16059875193).

28338547239 is a wasteful number, since it uses less digits than its factorization.

28338547239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4517607 (or 4517604 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 28338547239 in words is "twenty-eight billion, three hundred thirty-eight million, five hundred forty-seven thousand, two hundred thirty-nine".