16731272 has 8 divisors (see below), whose sum is σ = 31371150. Its totient is φ = 8365632.

The previous prime is 16731259. The next prime is 16731277. The reversal of 16731272 is 27213761.

It can be written as a sum of positive squares in only one way, i.e., 16532356 + 198916 = 4066^2 + 446^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (16731277) 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 as a sum of consecutive naturals, namely, 1045697 + ... + 1045712.

Almost surely, 2^16731272 is an apocalyptic number.

It is an amenable number.

16731272 is a deficient number, since it is larger than the sum of its proper divisors (14639878).

16731272 is a wasteful number, since it uses less digits than its factorization.

16731272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091415 (or 2091411 counting only the distinct ones).

The product of its digits is 3528, while the sum is 29.

The square root of 16731272 is about 4090.3877566803. The cubic root of 16731272 is about 255.7661030947.

The spelling of 16731272 in words is "sixteen million, seven hundred thirty-one thousand, two hundred seventy-two".