281968867 has 8 divisors (see below), whose sum is σ = 284948720. Its totient is φ = 279002880.

The previous prime is 281968837. The next prime is 281968877. The reversal of 281968867 is 768869182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-281968867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281968807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40267 + ... + 46747.

It is an arithmetic number, because the mean of its divisors is an integer number (35618590).

Almost surely, 2^281968867 is an apocalyptic number.

281968867 is a deficient number, since it is larger than the sum of its proper divisors (2979853).

281968867 is a wasteful number, since it uses less digits than its factorization.

281968867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6933.

The product of its digits is 2322432, while the sum is 55.

The square root of 281968867 is about 16791.9286265753. The cubic root of 281968867 is about 655.7430853402.

The spelling of 281968867 in words is "two hundred eighty-one million, nine hundred sixty-eight thousand, eight hundred sixty-seven".