16844172 has 12 divisors (see below), whose sum is σ = 39303096. Its totient is φ = 5614720.

The previous prime is 16844171. The next prime is 16844197. The reversal of 16844172 is 27144861.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×16844172² = 567452260731168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16844171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 701829 + ... + 701852.

It is an arithmetic number, because the mean of its divisors is an integer number (3275258).

Almost surely, 2^16844172 is an apocalyptic number.

16844172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16844172 is an abundant number, since it is smaller than the sum of its proper divisors (22458924).

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

16844172 is a wasteful number, since it uses less digits than its factorization.

16844172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403688 (or 1403686 counting only the distinct ones).

The product of its digits is 10752, while the sum is 33.

The square root of 16844172 is about 4104.1652013534. The cubic root of 16844172 is about 256.3401037885.

The spelling of 16844172 in words is "sixteen million, eight hundred forty-four thousand, one hundred seventy-two".