16872971 has 4 divisors (see below), whose sum is σ = 16911000. Its totient is φ = 16834944.

The previous prime is 16872967. The next prime is 16872979. The reversal of 16872971 is 17927861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16872971 - 2² = 16872967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16872979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18341 + ... + 19238.

It is an arithmetic number, because the mean of its divisors is an integer number (4227750).

Almost surely, 2^16872971 is an apocalyptic number.

16872971 is a deficient number, since it is larger than the sum of its proper divisors (38029).

16872971 is an equidigital number, since it uses as much as digits as its factorization.

16872971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38028.

The product of its digits is 42336, while the sum is 41.

The square root of 16872971 is about 4107.6722118494. The cubic root of 16872971 is about 256.4861114674.

The spelling of 16872971 in words is "sixteen million, eight hundred seventy-two thousand, nine hundred seventy-one".