16489172 has 24 divisors (see below), whose sum is σ = 33245184. Its totient is φ = 7009632.

The previous prime is 16489171. The next prime is 16489181. The reversal of 16489172 is 27198461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16489171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1238 + ... + 5874.

It is an arithmetic number, because the mean of its divisors is an integer number (1385216).

Almost surely, 2^16489172 is an apocalyptic number.

It is an amenable number.

16489172 is an abundant number, since it is smaller than the sum of its proper divisors (16756012).

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

16489172 is a wasteful number, since it uses less digits than its factorization.

16489172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4775 (or 4773 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 16489172 is about 4060.6861489162. The cubic root of 16489172 is about 254.5264670902.

It can be divided in two parts, 16489 and 172, that added together give a palindrome (16661).

The spelling of 16489172 in words is "sixteen million, four hundred eighty-nine thousand, one hundred seventy-two".