28786050547 has 4 divisors (see below), whose sum is σ = 30479347656. Its totient is φ = 27092753440.

The previous prime is 28786050523. The next prime is 28786050551. The reversal of 28786050547 is 74505068782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74505068782 = 2 ⋅37252534391.

It is a cyclic number.

It is not a de Polignac number, because 28786050547 - 2¹⁵ = 28786017779 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28786050494 and 28786050503.

It is not an unprimeable number, because it can be changed into a prime (28786050577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846648529 + ... + 846648562.

It is an arithmetic number, because the mean of its divisors is an integer number (7619836914).

Almost surely, 2^28786050547 is an apocalyptic number.

28786050547 is a deficient number, since it is larger than the sum of its proper divisors (1693297109).

28786050547 is a wasteful number, since it uses less digits than its factorization.

28786050547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693297108.

The product of its (nonzero) digits is 3763200, while the sum is 52.

The spelling of 28786050547 in words is "twenty-eight billion, seven hundred eighty-six million, fifty thousand, five hundred forty-seven".