28533367447 has 4 divisors (see below), whose sum is σ = 30728241880. Its totient is φ = 26338493016.

The previous prime is 28533367433. The next prime is 28533367469. The reversal of 28533367447 is 74476333582.

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-28533367447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28533367394 and 28533367403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28533367427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1097437197 + ... + 1097437222.

It is an arithmetic number, because the mean of its divisors is an integer number (7682060470).

Almost surely, 2^28533367447 is an apocalyptic number.

28533367447 is a deficient number, since it is larger than the sum of its proper divisors (2194874433).

28533367447 is a wasteful number, since it uses less digits than its factorization.

28533367447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194874432.

The product of its digits is 10160640, while the sum is 52.

The spelling of 28533367447 in words is "twenty-eight billion, five hundred thirty-three million, three hundred sixty-seven thousand, four hundred forty-seven".