28280424463 has 4 divisors (see below), whose sum is σ = 28326112360. Its totient is φ = 28234736568.

The previous prime is 28280424457. The next prime is 28280424499. The reversal of 28280424463 is 36442408282.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28280424463 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 (28280424863) 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, 22843020 + ... + 22844257.

It is an arithmetic number, because the mean of its divisors is an integer number (7081528090).

Almost surely, 2^28280424463 is an apocalyptic number.

28280424463 is a deficient number, since it is larger than the sum of its proper divisors (45687897).

28280424463 is an equidigital number, since it uses as much as digits as its factorization.

28280424463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45687896.

The product of its (nonzero) digits is 589824, while the sum is 43.

The spelling of 28280424463 in words is "twenty-eight billion, two hundred eighty million, four hundred twenty-four thousand, four hundred sixty-three".