28279914793868 has 12 divisors (see below), whose sum is σ = 49494675003480. Its totient is φ = 14138579078592.

The previous prime is 28279914793853. The next prime is 28279914793873. The reversal of 28279914793868 is 86839741997282.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344533421 + ... + 344615492.

It is an arithmetic number, because the mean of its divisors is an integer number (4124556250290).

Almost surely, 2^{28279914793868} is an apocalyptic number.

It is an amenable number.

28279914793868 is a deficient number, since it is larger than the sum of its proper divisors (21214760209612).

28279914793868 is a wasteful number, since it uses less digits than its factorization.

28279914793868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689159176 (or 689159174 counting only the distinct ones).

The product of its digits is 5267275776, while the sum is 83.

The spelling of 28279914793868 in words is "twenty-eight trillion, two hundred seventy-nine billion, nine hundred fourteen million, seven hundred ninety-three thousand, eight hundred sixty-eight".