16005272 has 8 divisors (see below), whose sum is σ = 30009900. Its totient is φ = 8002632.

The previous prime is 16005271. The next prime is 16005281. The reversal of 16005272 is 27250061.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16005271) by changing a digit.

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 as a sum of consecutive naturals, namely, 1000322 + ... + 1000337.

Almost surely, 2^16005272 is an apocalyptic number.

It is an amenable number.

16005272 is a deficient number, since it is larger than the sum of its proper divisors (14004628).

16005272 is a wasteful number, since it uses less digits than its factorization.

16005272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000665 (or 2000661 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 16005272 is about 4000.6589457238. The cubic root of 16005272 is about 252.0118832055.

The spelling of 16005272 in words is "sixteen million, five thousand, two hundred seventy-two".