16872539 has 4 divisors (see below), whose sum is σ = 17149200. Its totient is φ = 16595880.

The previous prime is 16872523. The next prime is 16872553. The reversal of 16872539 is 93527861.

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 16872539 - 2⁴ = 16872523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16872496 and 16872505.

It is not an unprimeable number, because it can be changed into a prime (16872439) 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, 138239 + ... + 138360.

It is an arithmetic number, because the mean of its divisors is an integer number (4287300).

Almost surely, 2^16872539 is an apocalyptic number.

16872539 is a deficient number, since it is larger than the sum of its proper divisors (276661).

16872539 is an equidigital number, since it uses as much as digits as its factorization.

16872539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276660.

The product of its digits is 90720, while the sum is 41.

The square root of 16872539 is about 4107.6196269859. The cubic root of 16872539 is about 256.4839225040.

The spelling of 16872539 in words is "sixteen million, eight hundred seventy-two thousand, five hundred thirty-nine".