16343418 has 64 divisors (see below), whose sum is σ = 41368320. Its totient is φ = 4188672.

The previous prime is 16343407. The next prime is 16343449. The reversal of 16343418 is 81434361.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19798 + ... + 20606.

It is an arithmetic number, because the mean of its divisors is an integer number (646380).

Almost surely, 2^16343418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16343418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20684160).

16343418 is an abundant number, since it is smaller than the sum of its proper divisors (25024902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16343418 is a wasteful number, since it uses less digits than its factorization.

16343418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871.

The product of its digits is 6912, while the sum is 30.

The square root of 16343418 is about 4042.6993457342. The cubic root of 16343418 is about 253.7742947126.

Adding to 16343418 its reverse (81434361), we get a palindrome (97777779).

It can be divided in two parts, 16343 and 418, that added together give a palindrome (16761).

The spelling of 16343418 in words is "sixteen million, three hundred forty-three thousand, four hundred eighteen".