28336708613 has 4 divisors (see below), whose sum is σ = 28337793408. Its totient is φ = 28335623820.

The previous prime is 28336708601. The next prime is 28336708619. The reversal of 28336708613 is 31680763382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28336708613 - 2¹⁴ = 28336692229 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 (28336708619) 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, 502223 + ... + 555788.

It is an arithmetic number, because the mean of its divisors is an integer number (7084448352).

Almost surely, 2^28336708613 is an apocalyptic number.

It is an amenable number.

28336708613 is a deficient number, since it is larger than the sum of its proper divisors (1084795).

28336708613 is a wasteful number, since it uses less digits than its factorization.

28336708613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084794.

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 28336708613 in words is "twenty-eight billion, three hundred thirty-six million, seven hundred eight thousand, six hundred thirteen".