16872387 has 8 divisors (see below), whose sum is σ = 25710336. Its totient is φ = 9641352.

The previous prime is 16872379. The next prime is 16872397. The reversal of 16872387 is 78327861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16872387 - 2³ = 16872379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16872337) 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 7 ways as a sum of consecutive naturals, for example, 401703 + ... + 401744.

It is an arithmetic number, because the mean of its divisors is an integer number (3213792).

Almost surely, 2^16872387 is an apocalyptic number.

16872387 is a deficient number, since it is larger than the sum of its proper divisors (8837949).

16872387 is an equidigital number, since it uses as much as digits as its factorization.

16872387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803457.

The product of its digits is 112896, while the sum is 42.

The square root of 16872387 is about 4107.6011247442. The cubic root of 16872387 is about 256.4831523043.

The spelling of 16872387 in words is "sixteen million, eight hundred seventy-two thousand, three hundred eighty-seven".