143840864 has 24 divisors (see below), whose sum is σ = 285699960. Its totient is φ = 71282176.

The previous prime is 143840863. The next prime is 143840897. The reversal of 143840864 is 468048341.

143840864 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143840863) 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, 16274 + ... + 23505.

It is an arithmetic number, because the mean of its divisors is an integer number (11904165).

Almost surely, 2^143840864 is an apocalyptic number.

It is an amenable number.

143840864 is a deficient number, since it is larger than the sum of its proper divisors (141859096).

143840864 is a wasteful number, since it uses less digits than its factorization.

143840864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39902 (or 39894 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 143840864 is about 11993.3675004146. The cubic root of 143840864 is about 523.9551269773.

The spelling of 143840864 in words is "one hundred forty-three million, eight hundred forty thousand, eight hundred sixty-four".