16818336 has 72 divisors (see below), whose sum is σ = 49926240. Its totient is φ = 5360256.

The previous prime is 16818317. The next prime is 16818343. The reversal of 16818336 is 63381861.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 16818336.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5355 + ... + 7893.

It is an arithmetic number, because the mean of its divisors is an integer number (693420).

Almost surely, 2^16818336 is an apocalyptic number.

16818336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16818336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24963120).

16818336 is an abundant number, since it is smaller than the sum of its proper divisors (33107904).

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

16818336 is a wasteful number, since it uses less digits than its factorization.

16818336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578 (or 2567 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 16818336 is about 4101.0164593671. The cubic root of 16818336 is about 256.2089764985.

The spelling of 16818336 in words is "sixteen million, eight hundred eighteen thousand, three hundred thirty-six".