16243265 has 4 divisors (see below), whose sum is σ = 19491924. Its totient is φ = 12994608.

The previous prime is 16243229. The next prime is 16243273. The reversal of 16243265 is 56234261.

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 9684544 + 6558721 = 3112^2 + 2561^2 .

It is a cyclic number.

It is not a de Polignac number, because 16243265 - 2⁸ = 16243009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1624322 + ... + 1624331.

It is an arithmetic number, because the mean of its divisors is an integer number (4872981).

Almost surely, 2^16243265 is an apocalyptic number.

It is an amenable number.

16243265 is a deficient number, since it is larger than the sum of its proper divisors (3248659).

16243265 is an equidigital number, since it uses as much as digits as its factorization.

16243265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248658.

The product of its digits is 8640, while the sum is 29.

The square root of 16243265 is about 4030.2934136363. The cubic root of 16243265 is about 253.2548531524.

The spelling of 16243265 in words is "sixteen million, two hundred forty-three thousand, two hundred sixty-five".