28646173706 has 16 divisors (see below), whose sum is σ = 43357221000. Its totient is φ = 14193811968.

The previous prime is 28646173691. The next prime is 28646173733. The reversal of 28646173706 is 60737164682.

It can be written as a sum of positive squares in 4 ways, for example, as 14445876481 + 14200297225 = 120191^2 + 119165^2 .

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, 2513990 + ... + 2525358.

Almost surely, 2^28646173706 is an apocalyptic number.

28646173706 is a deficient number, since it is larger than the sum of its proper divisors (14711047294).

28646173706 is a wasteful number, since it uses less digits than its factorization.

28646173706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22633.

The product of its (nonzero) digits is 2032128, while the sum is 50.

The spelling of 28646173706 in words is "twenty-eight billion, six hundred forty-six million, one hundred seventy-three thousand, seven hundred six".