16871261 has 8 divisors (see below), whose sum is σ = 18797184. Its totient is φ = 15010720.

The previous prime is 16871237. The next prime is 16871263. The reversal of 16871261 is 16217861.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 16871261 - 2²² = 12676957 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 (16871263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15800 + ... + 16833.

It is an arithmetic number, because the mean of its divisors is an integer number (2349648).

Almost surely, 2^16871261 is an apocalyptic number.

16871261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16871261 is a deficient number, since it is larger than the sum of its proper divisors (1925923).

16871261 is a wasteful number, since it uses less digits than its factorization.

16871261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32691.

The product of its digits is 4032, while the sum is 32.

The square root of 16871261 is about 4107.4640594897. The cubic root of 16871261 is about 256.4774466020.

The spelling of 16871261 in words is "sixteen million, eight hundred seventy-one thousand, two hundred sixty-one".