16321968 has 60 divisors (see below), whose sum is σ = 49198240. Its totient is φ = 5021568.

The previous prime is 16321961. The next prime is 16321999. The reversal of 16321968 is 86912361.

16321968 is a `hidden beast` number, since 1 + 632 + 19 + 6 + 8 = 666.

16321968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not an unprimeable number, because it can be changed into a prime (16321961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2488 + ... + 6231.

Almost surely, 2^16321968 is an apocalyptic number.

16321968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16321968 is an abundant number, since it is smaller than the sum of its proper divisors (32876272).

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

16321968 is a wasteful number, since it uses less digits than its factorization.

16321968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8746 (or 8737 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 16321968 is about 4040.0455442977. The cubic root of 16321968 is about 253.6632236626.

It can be divided in two parts, 1632 and 1968, that added together give a square (3600 = 60²).

The spelling of 16321968 in words is "sixteen million, three hundred twenty-one thousand, nine hundred sixty-eight".