28608746839 has 4 divisors (see below), whose sum is σ = 28612120680. Its totient is φ = 28605373000.

The previous prime is 28608746791. The next prime is 28608746891. The reversal of 28608746839 is 93864780682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93864780682 = 2 ⋅46932390341.

It is a cyclic number.

It is not a de Polignac number, because 28608746839 - 2²⁹ = 28071875927 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 (28608744839) 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, 1674169 + ... + 1691170.

It is an arithmetic number, because the mean of its divisors is an integer number (7153030170).

Almost surely, 2^28608746839 is an apocalyptic number.

28608746839 is a deficient number, since it is larger than the sum of its proper divisors (3373841).

28608746839 is an equidigital number, since it uses as much as digits as its factorization.

28608746839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3373840.

The product of its (nonzero) digits is 27869184, while the sum is 61.

The spelling of 28608746839 in words is "twenty-eight billion, six hundred eight million, seven hundred forty-six thousand, eight hundred thirty-nine".