28729892782 has 16 divisors (see below), whose sum is σ = 44989876800. Its totient is φ = 13742356320.

The previous prime is 28729892701. The next prime is 28729892801.

28729892782 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2265894 + ... + 2278537.

It is an arithmetic number, because the mean of its divisors is an integer number (2811867300).

Almost surely, 2^28729892782 is an apocalyptic number.

28729892782 is a deficient number, since it is larger than the sum of its proper divisors (16259984018).

28729892782 is a wasteful number, since it uses less digits than its factorization.

28729892782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4544571.

The product of its digits is 32514048, while the sum is 64.

The spelling of 28729892782 in words is "twenty-eight billion, seven hundred twenty-nine million, eight hundred ninety-two thousand, seven hundred eighty-two".