28729825226 has 16 divisors (see below), whose sum is σ = 43521878400. Its totient is φ = 14222588688.

The previous prime is 28729825181. The next prime is 28729825301. The reversal of 28729825226 is 62252892782.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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, 1321835 + ... + 1343393.

It is an arithmetic number, because the mean of its divisors is an integer number (2720117400).

Almost surely, 2^28729825226 is an apocalyptic number.

28729825226 is a deficient number, since it is larger than the sum of its proper divisors (14792053174).

28729825226 is a wasteful number, since it uses less digits than its factorization.

28729825226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28133.

The product of its digits is 3870720, while the sum is 53.

The spelling of 28729825226 in words is "twenty-eight billion, seven hundred twenty-nine million, eight hundred twenty-five thousand, two hundred twenty-six".