28879965986806 has 32 divisors (see below), whose sum is σ = 49450836473856. Its totient is φ = 12529772712000.

The previous prime is 28879965986797. The next prime is 28879965986857. The reversal of 28879965986806 is 60868956997882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289991250 + ... + 290090821.

It is an arithmetic number, because the mean of its divisors is an integer number (1545338639808).

Almost surely, 2^{28879965986806} is an apocalyptic number.

28879965986806 is a deficient number, since it is larger than the sum of its proper divisors (20570870487050).

28879965986806 is a wasteful number, since it uses less digits than its factorization.

28879965986806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580082188.

The product of its (nonzero) digits is 45148078080, while the sum is 91.

The spelling of 28879965986806 in words is "twenty-eight trillion, eight hundred seventy-nine billion, nine hundred sixty-five million, nine hundred eighty-six thousand, eight hundred six".