16443436 has 36 divisors (see below), whose sum is σ = 31742200. Its totient is φ = 7432128.

The previous prime is 16443431. The next prime is 16443451. The reversal of 16443436 is 63434461.

It is a happy number.

It is a super-3 number, since 3×16443436³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16443398 and 16443407.

It is not an unprimeable number, because it can be changed into a prime (16443431) 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 11 ways as a sum of consecutive naturals, for example, 40000 + ... + 40408.

Almost surely, 2^16443436 is an apocalyptic number.

It is an amenable number.

16443436 is a deficient number, since it is larger than the sum of its proper divisors (15298764).

16443436 is a wasteful number, since it uses less digits than its factorization.

16443436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478 (or 453 counting only the distinct ones).

The product of its digits is 20736, while the sum is 31.

The square root of 16443436 is about 4055.0506778584. The cubic root of 16443436 is about 254.2909225762.

Adding to 16443436 its reverse (63434461), we get a palindrome (79877897).

Subtracting 16443436 from its reverse (63434461), we obtain a square (46991025 = 6855²).

The spelling of 16443436 in words is "sixteen million, four hundred forty-three thousand, four hundred thirty-six".