28774166147782 has 16 divisors (see below), whose sum is σ = 47290610509200. Its totient is φ = 13022052164640.

The previous prime is 28774166147767. The next prime is 28774166147791.

28774166147782 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 (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2855708157 + ... + 2855718232.

It is an arithmetic number, because the mean of its divisors is an integer number (2955663156825).

Almost surely, 2^{28774166147782} is an apocalyptic number.

28774166147782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28774166147782 is a deficient number, since it is larger than the sum of its proper divisors (18516444361418).

28774166147782 is a wasteful number, since it uses less digits than its factorization.

28774166147782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5711426631.

The product of its digits is 354041856, while the sum is 70.

The spelling of 28774166147782 in words is "twenty-eight trillion, seven hundred seventy-four billion, one hundred sixty-six million, one hundred forty-seven thousand, seven hundred eighty-two".