16433320 has 16 divisors (see below), whose sum is σ = 36975060. Its totient is φ = 6573312.

The previous prime is 16433303. The next prime is 16433321. The reversal of 16433320 is 2333461.

It can be written as a sum of positive squares in 2 ways, for example, as 16016004 + 417316 = 4002^2 + 646^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16433291 and 16433300.

It is not an unprimeable number, because it can be changed into a prime (16433321) 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 3 ways as a sum of consecutive naturals, for example, 205377 + ... + 205456.

Almost surely, 2^16433320 is an apocalyptic number.

16433320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16433320 is an abundant number, since it is smaller than the sum of its proper divisors (20541740).

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

16433320 is a wasteful number, since it uses less digits than its factorization.

16433320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410844 (or 410840 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 16433320 is about 4053.8031525963. The cubic root of 16433320 is about 254.2387652966.

Adding to 16433320 its reverse (2333461), we get a palindrome (18766781).

The spelling of 16433320 in words is "sixteen million, four hundred thirty-three thousand, three hundred twenty".