28774247782 has 32 divisors (see below), whose sum is σ = 49469110272. Its totient is φ = 12296422944.

The previous prime is 28774247759. The next prime is 28774247797.

It is a happy number.

28774247782 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8443923 + ... + 8447329.

It is an arithmetic number, because the mean of its divisors is an integer number (1545909696).

Almost surely, 2^28774247782 is an apocalyptic number.

28774247782 is a deficient number, since it is larger than the sum of its proper divisors (20694862490).

28774247782 is a wasteful number, since it uses less digits than its factorization.

28774247782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4972.

The product of its digits is 19668992, while the sum is 58.

The spelling of 28774247782 in words is "twenty-eight billion, seven hundred seventy-four million, two hundred forty-seven thousand, seven hundred eighty-two".