28875423866 has 32 divisors (see below), whose sum is σ = 45042670080. Its totient is φ = 13868510400.

The previous prime is 28875423851. The next prime is 28875423883. The reversal of 28875423866 is 66832457882.

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, 4923776 + ... + 4929636.

It is an arithmetic number, because the mean of its divisors is an integer number (1407583440).

Almost surely, 2^28875423866 is an apocalyptic number.

28875423866 is a deficient number, since it is larger than the sum of its proper divisors (16167246214).

28875423866 is a wasteful number, since it uses less digits than its factorization.

28875423866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6470.

The product of its digits is 30965760, while the sum is 59.

The spelling of 28875423866 in words is "twenty-eight billion, eight hundred seventy-five million, four hundred twenty-three thousand, eight hundred sixty-six".