281863960028 has 12 divisors (see below), whose sum is σ = 563727920112. Its totient is φ = 120798840000.

The previous prime is 281863959913. The next prime is 281863960057. The reversal of 281863960028 is 820069368182.

281863960028 is an admirable number.

It is a congruent number.

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, 5033284973 + ... + 5033285028.

It is an arithmetic number, because the mean of its divisors is an integer number (46977326676).

Almost surely, 2^281863960028 is an apocalyptic number.

281863960028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

281863960028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

281863960028 is a wasteful number, since it uses less digits than its factorization.

281863960028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10066570012 (or 10066570010 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 53.

The spelling of 281863960028 in words is "two hundred eighty-one billion, eight hundred sixty-three million, nine hundred sixty thousand, twenty-eight".