16443396 has 36 divisors (see below), whose sum is σ = 42141372. Its totient is φ = 5405184.

The previous prime is 16443391. The next prime is 16443397. The reversal of 16443396 is 69334461.

16443396 is a `hidden beast` number, since 1 + 644 + 3 + 3 + 9 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13838400 + 2604996 = 3720^2 + 1614^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×16443396³ (a number of 23 digits) contains 333 as substring.

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 16443396.

It is not an unprimeable number, because it can be changed into a prime (16443391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 501 + ... + 5756.

Almost surely, 2^16443396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16443396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21070686).

16443396 is an abundant number, since it is smaller than the sum of its proper divisors (25697976).

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

16443396 is a wasteful number, since it uses less digits than its factorization.

16443396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6340 (or 6335 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 16443396 is about 4055.0457457346. The cubic root of 16443396 is about 254.2907163816.

The spelling of 16443396 in words is "sixteen million, four hundred forty-three thousand, three hundred ninety-six".