16872881 has 4 divisors (see below), whose sum is σ = 16886592. Its totient is φ = 16859172.

The previous prime is 16872847. The next prime is 16872883. The reversal of 16872881 is 18827861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16872881 - 2²² = 12678577 is a prime.

It is a super-2 number, since 2×16872881² = 569388226480322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16872883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4805 + ... + 7538.

It is an arithmetic number, because the mean of its divisors is an integer number (4221648).

Almost surely, 2^16872881 is an apocalyptic number.

It is an amenable number.

16872881 is a deficient number, since it is larger than the sum of its proper divisors (13711).

16872881 is a wasteful number, since it uses less digits than its factorization.

16872881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13710.

The product of its digits is 43008, while the sum is 41.

The square root of 16872881 is about 4107.6612567250. The cubic root of 16872881 is about 256.4856554364.

The spelling of 16872881 in words is "sixteen million, eight hundred seventy-two thousand, eight hundred eighty-one".