281947068 has 144 divisors (see below), whose sum is σ = 812893536. Its totient is φ = 84913920.

The previous prime is 281947051. The next prime is 281947079. The reversal of 281947068 is 860749182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 669498 + ... + 669918.

It is an arithmetic number, because the mean of its divisors is an integer number (5645094).

Almost surely, 2^281947068 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 281947068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406446768).

281947068 is an abundant number, since it is smaller than the sum of its proper divisors (530946468).

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

281947068 is a wasteful number, since it uses less digits than its factorization.

281947068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 281947068 is about 16791.2795224188. The cubic root of 281947068 is about 655.7261864155.

The spelling of 281947068 in words is "two hundred eighty-one million, nine hundred forty-seven thousand, sixty-eight".