28939673089536 has 80 divisors (see below), whose sum is σ = 84105924965568. Its totient is φ = 8769597900800.

The previous prime is 28939673089517. The next prime is 28939673089583. The reversal of 28939673089536 is 63598037693982.

It is a congruent 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, 856389150 + ... + 856422941.

Almost surely, 2^{28939673089536} is an apocalyptic number.

It is an amenable number.

28939673089536 is an abundant number, since it is smaller than the sum of its proper divisors (55166251876032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28939673089536 is a wasteful number, since it uses less digits than its factorization.

28939673089536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712812123 (or 1712812107 counting only the distinct ones).

The product of its (nonzero) digits is 3174474240, while the sum is 78.

The spelling of 28939673089536 in words is "twenty-eight trillion, nine hundred thirty-nine billion, six hundred seventy-three million, eighty-nine thousand, five hundred thirty-six".