281336268028 has 12 divisors (see below), whose sum is σ = 492444677592. Its totient is φ = 140637788720.

The previous prime is 281336267879. The next prime is 281336268061. The reversal of 281336268028 is 820862633182.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7565458 + ... + 7602553.

It is an arithmetic number, because the mean of its divisors is an integer number (41037056466).

Almost surely, 2^281336268028 is an apocalyptic number.

It is an amenable number.

281336268028 is a deficient number, since it is larger than the sum of its proper divisors (211108409564).

281336268028 is a wasteful number, since it uses less digits than its factorization.

281336268028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15172652 (or 15172650 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 49.

The spelling of 281336268028 in words is "two hundred eighty-one billion, three hundred thirty-six million, two hundred sixty-eight thousand, twenty-eight".