28705050782 has 4 divisors (see below), whose sum is σ = 43057576176. Its totient is φ = 14352525390.

The previous prime is 28705050779. The next prime is 28705050791.

28705050782 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7176262694 + ... + 7176262697.

It is an arithmetic number, because the mean of its divisors is an integer number (10764394044).

Almost surely, 2^28705050782 is an apocalyptic number.

28705050782 is a deficient number, since it is larger than the sum of its proper divisors (14352525394).

28705050782 is a wasteful number, since it uses less digits than its factorization.

28705050782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14352525393.

The product of its (nonzero) digits is 313600, while the sum is 44.

The spelling of 28705050782 in words is "twenty-eight billion, seven hundred five million, fifty thousand, seven hundred eighty-two".