16798281 has 4 divisors (see below), whose sum is σ = 22397712. Its totient is φ = 11198852.

The previous prime is 16798277. The next prime is 16798283. The reversal of 16798281 is 18289761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16798281 - 2² = 16798277 is a prime.

It is a super-2 number, since 2×16798281² = 564364489109922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16798283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2799711 + ... + 2799716.

It is an arithmetic number, because the mean of its divisors is an integer number (5599428).

Almost surely, 2^16798281 is an apocalyptic number.

It is an amenable number.

16798281 is a deficient number, since it is larger than the sum of its proper divisors (5599431).

16798281 is an equidigital number, since it uses as much as digits as its factorization.

16798281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5599430.

The product of its digits is 48384, while the sum is 42.

The square root of 16798281 is about 4098.5706044913. The cubic root of 16798281 is about 256.1070973202.

The spelling of 16798281 in words is "sixteen million, seven hundred ninety-eight thousand, two hundred eighty-one".