16271872 has 40 divisors (see below), whose sum is σ = 33108372. Its totient is φ = 7987200.

The previous prime is 16271803. The next prime is 16271881. The reversal of 16271872 is 27817261.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13660416 + 2611456 = 3696^2 + 1616^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30972 + ... + 31492.

Almost surely, 2^16271872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16271872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16554186).

16271872 is an abundant number, since it is smaller than the sum of its proper divisors (16836500).

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

16271872 is an frugal number, since it uses more digits than its factorization.

16271872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600 (or 584 counting only the distinct ones).

The product of its digits is 9408, while the sum is 34.

The square root of 16271872 is about 4033.8408496122. The cubic root of 16271872 is about 253.4034401231.

The spelling of 16271872 in words is "sixteen million, two hundred seventy-one thousand, eight hundred seventy-two".