16189272 has 48 divisors (see below), whose sum is σ = 47834280. Its totient is φ = 4905600.

The previous prime is 16189267. The next prime is 16189289. The reversal of 16189272 is 27298161.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 9429 + ... + 11012.

Almost surely, 2^16189272 is an apocalyptic number.

16189272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16189272 is an abundant number, since it is smaller than the sum of its proper divisors (31645008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16189272 is a wasteful number, since it uses less digits than its factorization.

16189272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20464 (or 20457 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 16189272 is about 4023.5894422766. The cubic root of 16189272 is about 252.9739332713.

Subtracting 16189272 from its reverse (27298161), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 16189 and 272, that added together give a palindrome (16461).

The spelling of 16189272 in words is "sixteen million, one hundred eighty-nine thousand, two hundred seventy-two".