281980068 has 48 divisors (see below), whose sum is σ = 675983616. Its totient is φ = 91435680.

The previous prime is 281980063. The next prime is 281980073. The reversal of 281980068 is 860089182.

It is an interprime number because it is at equal distance from previous prime (281980063) and next prime (281980073).

It is not an unprimeable number, because it can be changed into a prime (281980063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145063 + ... + 146993.

It is an arithmetic number, because the mean of its divisors is an integer number (14082992).

Almost surely, 2^281980068 is an apocalyptic number.

It is an amenable number.

281980068 is an abundant number, since it is smaller than the sum of its proper divisors (394003548).

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

281980068 is a wasteful number, since it uses less digits than its factorization.

281980068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264 (or 2262 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 281980068 is about 16792.2621465960. The cubic root of 281980068 is about 655.7517681912.

The spelling of 281980068 in words is "two hundred eighty-one million, nine hundred eighty thousand, sixty-eight".