16197172 has 6 divisors (see below), whose sum is σ = 28345058. Its totient is φ = 8098584.

The previous prime is 16197169. The next prime is 16197179. The reversal of 16197172 is 27179161.

It can be written as a sum of positive squares in only one way, i.e., 15792676 + 404496 = 3974^2 + 636^2 .

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16197179) by changing a digit.

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 as a sum of consecutive naturals, namely, 2024643 + ... + 2024650.

Almost surely, 2^16197172 is an apocalyptic number.

It is an amenable number.

16197172 is a deficient number, since it is larger than the sum of its proper divisors (12147886).

16197172 is a wasteful number, since it uses less digits than its factorization.

16197172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4049297 (or 4049295 counting only the distinct ones).

The product of its digits is 5292, while the sum is 34.

The square root of 16197172 is about 4024.5710330419. The cubic root of 16197172 is about 253.0150751067.

The spelling of 16197172 in words is "sixteen million, one hundred ninety-seven thousand, one hundred seventy-two".