281998117 has 8 divisors (see below), whose sum is σ = 291997440. Its totient is φ = 272017200.

The previous prime is 281998097. The next prime is 281998121. The reversal of 281998117 is 711899182.

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-281998117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281998177) 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, 31492 + ... + 39442.

It is an arithmetic number, because the mean of its divisors is an integer number (36499680).

Almost surely, 2^281998117 is an apocalyptic number.

It is an amenable number.

281998117 is a deficient number, since it is larger than the sum of its proper divisors (9999323).

281998117 is a wasteful number, since it uses less digits than its factorization.

281998117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9203.

The product of its digits is 72576, while the sum is 46.

The square root of 281998117 is about 16792.7995581440. The cubic root of 281998117 is about 655.7657590278.

The spelling of 281998117 in words is "two hundred eighty-one million, nine hundred ninety-eight thousand, one hundred seventeen".