16281085 has 4 divisors (see below), whose sum is σ = 19537308. Its totient is φ = 13024864.

The previous prime is 16281071. The next prime is 16281101. The reversal of 16281085 is 58018261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11168964 + 5112121 = 3342^2 + 2261^2 .

It is a cyclic number.

It is not a de Polignac number, because 16281085 - 2¹¹ = 16279037 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1628104 + ... + 1628113.

It is an arithmetic number, because the mean of its divisors is an integer number (4884327).

Almost surely, 2^16281085 is an apocalyptic number.

It is an amenable number.

16281085 is a deficient number, since it is larger than the sum of its proper divisors (3256223).

16281085 is an equidigital number, since it uses as much as digits as its factorization.

16281085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3256222.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 16281085 is about 4034.9826517595. The cubic root of 16281085 is about 253.4512560806.

The spelling of 16281085 in words is "sixteen million, two hundred eighty-one thousand, eighty-five".