28774847783 has 8 divisors (see below), whose sum is σ = 31701543696. Its totient is φ = 25899952000.

The previous prime is 28774847771. The next prime is 28774847839. The reversal of 28774847783 is 38774847782.

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

It is a cyclic number.

It is not a de Polignac number, because 28774847783 - 2⁴ = 28774847767 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 (28774847743) 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 7 ways as a sum of consecutive naturals, for example, 12948866 + ... + 12951087.

It is an arithmetic number, because the mean of its divisors is an integer number (3962692962).

Almost surely, 2^28774847783 is an apocalyptic number.

28774847783 is a deficient number, since it is larger than the sum of its proper divisors (2926695913).

28774847783 is a wasteful number, since it uses less digits than its factorization.

28774847783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25900065.

The product of its digits is 118013952, while the sum is 65.

Subtracting 28774847783 from its reverse (38774847782), we obtain a palindrome (9999999999).

The spelling of 28774847783 in words is "twenty-eight billion, seven hundred seventy-four million, eight hundred forty-seven thousand, seven hundred eighty-three".