16344861 has 32 divisors (see below), whose sum is σ = 24718848. Its totient is φ = 9538560.

The previous prime is 16344847. The next prime is 16344901. The reversal of 16344861 is 16844361.

It is not a de Polignac number, because 16344861 - 2¹⁰ = 16343837 is a prime.

It is a super-2 number, since 2×16344861² = 534308962218642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16344821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67701 + ... + 67941.

It is an arithmetic number, because the mean of its divisors is an integer number (772464).

Almost surely, 2^16344861 is an apocalyptic number.

It is an amenable number.

16344861 is a deficient number, since it is larger than the sum of its proper divisors (8373987).

16344861 is a wasteful number, since it uses less digits than its factorization.

16344861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341.

The product of its digits is 13824, while the sum is 33.

The square root of 16344861 is about 4042.8778116584. The cubic root of 16344861 is about 253.7817632753.

Subtracting 16344861 from its reverse (16844361), we obtain a triangular number (499500 = T₉₉₉).

It can be divided in two parts, 16344 and 861, that added together give a triangular number (17205 = T₁₈₅).

The spelling of 16344861 in words is "sixteen million, three hundred forty-four thousand, eight hundred sixty-one".