143938668 has 24 divisors (see below), whose sum is σ = 336064960. Its totient is φ = 47949840.

The previous prime is 143938667. The next prime is 143938679. The reversal of 143938668 is 866839341.

It is a super-3 number, since 3×143938668³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (143938667) 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 7 ways as a sum of consecutive naturals, for example, 25923 + ... + 30981.

Almost surely, 2^143938668 is an apocalyptic number.

It is an amenable number.

143938668 is an abundant number, since it is smaller than the sum of its proper divisors (192126292).

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

143938668 is a wasteful number, since it uses less digits than its factorization.

143938668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7437 (or 7435 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The square root of 143938668 is about 11997.4442278345. Note that the first 3 decimals coincide. The cubic root of 143938668 is about 524.0738537786.

The spelling of 143938668 in words is "one hundred forty-three million, nine hundred thirty-eight thousand, six hundred sixty-eight".