16872241 has 4 divisors (see below), whose sum is σ = 16880500. Its totient is φ = 16863984.

The previous prime is 16872223. The next prime is 16872263. The reversal of 16872241 is 14227861.

16872241 = 2904² + 2905².

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8439025 + 8433216 = 2905^2 + 2904^2 .

It is a cyclic number.

It is not a de Polignac number, because 16872241 - 2¹¹ = 16870193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16872221) 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, 1435 + ... + 5983.

It is an arithmetic number, because the mean of its divisors is an integer number (4220125).

Almost surely, 2^16872241 is an apocalyptic number.

16872241 is the 2905-th centered square number.

It is an amenable number.

16872241 is a deficient number, since it is larger than the sum of its proper divisors (8259).

16872241 is an equidigital number, since it uses as much as digits as its factorization.

16872241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8258.

The product of its digits is 5376, while the sum is 31.

The square root of 16872241 is about 4107.5833527757. The cubic root of 16872241 is about 256.4824125029.

The spelling of 16872241 in words is "sixteen million, eight hundred seventy-two thousand, two hundred forty-one".