16872845 has 18 divisors (see below), whose sum is σ = 22389486. Its totient is φ = 12197680.

The previous prime is 16872833. The next prime is 16872847. The reversal of 16872845 is 54827861.

It can be written as a sum of positive squares in only one way, i.e., 13498276 + 3374569 = 3674^2 + 1837^2 .

It is not a de Polignac number, because 16872845 - 2⁴ = 16872829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16872847) 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 17 ways as a sum of consecutive naturals, for example, 100952 + ... + 101118.

Almost surely, 2^16872845 is an apocalyptic number.

It is an amenable number.

16872845 is a deficient number, since it is larger than the sum of its proper divisors (5516641).

16872845 is an equidigital number, since it uses as much as digits as its factorization.

16872845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361 (or 183 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 16872845 is about 4107.6568746671. The cubic root of 16872845 is about 256.4854730236.

The spelling of 16872845 in words is "sixteen million, eight hundred seventy-two thousand, eight hundred forty-five".