16381968 has 40 divisors (see below), whose sum is σ = 43309728. Its totient is φ = 5332992.

The previous prime is 16381961. The next prime is 16381979. The reversal of 16381968 is 86918361.

16381968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (16381961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1905 + ... + 6032.

Almost surely, 2^16381968 is an apocalyptic number.

It is an amenable number.

16381968 is an abundant number, since it is smaller than the sum of its proper divisors (26927760).

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

16381968 is a wasteful number, since it uses less digits than its factorization.

16381968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7991 (or 7985 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 16381968 is about 4047.4643914431. The cubic root of 16381968 is about 253.9736678843.

The spelling of 16381968 in words is "sixteen million, three hundred eighty-one thousand, nine hundred sixty-eight".