28308280547 has 8 divisors (see below), whose sum is σ = 29031679152. Its totient is φ = 27586451200.

The previous prime is 28308280513. The next prime is 28308280573. The reversal of 28308280547 is 74508280382.

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

It is a cyclic number.

It is not a de Polignac number, because 28308280547 - 2¹⁴ = 28308264163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28308289547) 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, 355733 + ... + 427974.

It is an arithmetic number, because the mean of its divisors is an integer number (3628959894).

Almost surely, 2^28308280547 is an apocalyptic number.

28308280547 is a deficient number, since it is larger than the sum of its proper divisors (723398605).

28308280547 is an equidigital number, since it uses as much as digits as its factorization.

28308280547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784629.

The product of its (nonzero) digits is 860160, while the sum is 47.

The spelling of 28308280547 in words is "twenty-eight billion, three hundred eight million, two hundred eighty thousand, five hundred forty-seven".