143638 has 8 divisors (see below), whose sum is σ = 235080. Its totient is φ = 65280.

The previous prime is 143629. The next prime is 143651. The reversal of 143638 is 836341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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, 3243 + ... + 3286.

It is an arithmetic number, because the mean of its divisors is an integer number (29385).

2¹⁴³⁶³⁸ is an apocalyptic number.

143638 is a deficient number, since it is larger than the sum of its proper divisors (91442).

143638 is a wasteful number, since it uses less digits than its factorization.

143638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6542.

The product of its digits is 1728, while the sum is 25.

The square root of 143638 is about 378.9960421957. The cubic root of 143638 is about 52.3708693435.

Adding to 143638 its reverse (836341), we get a palindrome (979979).

The spelling of 143638 in words is "one hundred forty-three thousand, six hundred thirty-eight".