28774847782 has 8 divisors (see below), whose sum is σ = 43187327496. Its totient is φ = 14379071952.

The previous prime is 28774847771. The next prime is 28774847839.

28774847782 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4171663 + ... + 4178554.

It is an arithmetic number, because the mean of its divisors is an integer number (5398415937).

Almost surely, 2^28774847782 is an apocalyptic number.

28774847782 is a deficient number, since it is larger than the sum of its proper divisors (14412479714).

28774847782 is a wasteful number, since it uses less digits than its factorization.

28774847782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8351942.

The product of its digits is 78675968, while the sum is 64.

The spelling of 28774847782 in words is "twenty-eight billion, seven hundred seventy-four million, eight hundred forty-seven thousand, seven hundred eighty-two".