28317734547 has 8 divisors (see below), whose sum is σ = 39977978256. Its totient is φ = 17767990272.

The previous prime is 28317734537. The next prime is 28317734563. The reversal of 28317734547 is 74543771382.

It is a happy number.

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

It is not a de Polignac number, because 28317734547 - 2⁴ = 28317734531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 555249697 = 28317734547 / (2 + 8 + 3 + 1 + 7 + 7 + 3 + 4 + 5 + 4 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 28317734547.

It is not an unprimeable number, because it can be changed into a prime (28317734507) 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, 277624798 + ... + 277624899.

It is an arithmetic number, because the mean of its divisors is an integer number (4997247282).

Almost surely, 2^28317734547 is an apocalyptic number.

28317734547 is a deficient number, since it is larger than the sum of its proper divisors (11660243709).

28317734547 is a wasteful number, since it uses less digits than its factorization.

28317734547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555249717.

The product of its digits is 3951360, while the sum is 51.

The spelling of 28317734547 in words is "twenty-eight billion, three hundred seventeen million, seven hundred thirty-four thousand, five hundred forty-seven".