28308248517 has 8 divisors (see below), whose sum is σ = 38961890560. Its totient is φ = 18263386080.

The previous prime is 28308248491. The next prime is 28308248531. The reversal of 28308248517 is 71584280382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28308248517 - 2⁸ = 28308248261 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 (28308240517) 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, 152194792 + ... + 152194977.

It is an arithmetic number, because the mean of its divisors is an integer number (4870236320).

Almost surely, 2^28308248517 is an apocalyptic number.

It is an amenable number.

28308248517 is a deficient number, since it is larger than the sum of its proper divisors (10653642043).

28308248517 is a wasteful number, since it uses less digits than its factorization.

28308248517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304389803.

The product of its (nonzero) digits is 860160, while the sum is 48.

The spelling of 28308248517 in words is "twenty-eight billion, three hundred eight million, two hundred forty-eight thousand, five hundred seventeen".