16647272 has 32 divisors (see below), whose sum is σ = 32011200. Its totient is φ = 8114304.

The previous prime is 16647251. The next prime is 16647311. The reversal of 16647272 is 27274661.

16647272 is a modest number, since divided by 7272 gives 1664 as remainder.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73223 + ... + 73449.

It is an arithmetic number, because the mean of its divisors is an integer number (1000350).

Almost surely, 2^16647272 is an apocalyptic number.

It is an amenable number.

16647272 is a deficient number, since it is larger than the sum of its proper divisors (15363928).

16647272 is a wasteful number, since it uses less digits than its factorization.

16647272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425 (or 421 counting only the distinct ones).

The product of its digits is 28224, while the sum is 35.

The square root of 16647272 is about 4080.1068613457. The cubic root of 16647272 is about 255.3373568997.

The spelling of 16647272 in words is "sixteen million, six hundred forty-seven thousand, two hundred seventy-two".