16405273 has 4 divisors (see below), whose sum is σ = 16428388. Its totient is φ = 16382160.

The previous prime is 16405253. The next prime is 16405283. The reversal of 16405273 is 37250461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37250461 = 47 ⋅792563.

It can be written as a sum of positive squares in 2 ways, for example, as 13741849 + 2663424 = 3707^2 + 1632^2 .

It is a cyclic number.

It is not a de Polignac number, because 16405273 - 2⁵ = 16405241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16405253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10458 + ... + 11923.

It is an arithmetic number, because the mean of its divisors is an integer number (4107097).

Almost surely, 2^16405273 is an apocalyptic number.

It is an amenable number.

16405273 is a deficient number, since it is larger than the sum of its proper divisors (23115).

16405273 is an equidigital number, since it uses as much as digits as its factorization.

16405273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23114.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 16405273 is about 4050.3423312110. The cubic root of 16405273 is about 254.0940451963.

The spelling of 16405273 in words is "sixteen million, four hundred five thousand, two hundred seventy-three".