281002668 has 12 divisors (see below), whose sum is σ = 655672920. Its totient is φ = 93667552.

The previous prime is 281002633. The next prime is 281002669. The reversal of 281002668 is 866200182.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (281002669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11708433 + ... + 11708456.

It is an arithmetic number, because the mean of its divisors is an integer number (54639410).

Almost surely, 2^281002668 is an apocalyptic number.

It is an amenable number.

281002668 is an abundant number, since it is smaller than the sum of its proper divisors (374670252).

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

281002668 is a wasteful number, since it uses less digits than its factorization.

281002668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23416896 (or 23416894 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 281002668 is about 16763.1341938195. The cubic root of 281002668 is about 654.9932349786.

The spelling of 281002668 in words is "two hundred eighty-one million, two thousand, six hundred sixty-eight".