143728 has 20 divisors (see below), whose sum is σ = 300328. Its totient is φ = 66240.

The previous prime is 143719. The next prime is 143729. The reversal of 143728 is 827341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138 + ... + 553.

2¹⁴³⁷²⁸ is an apocalyptic number.

It is an amenable number.

143728 is an abundant number, since it is smaller than the sum of its proper divisors (156600).

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

143728 is a wasteful number, since it uses less digits than its factorization.

143728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712 (or 706 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 143728 is about 379.1147583516. The cubic root of 143728 is about 52.3818051547.

The spelling of 143728 in words is "one hundred forty-three thousand, seven hundred twenty-eight".