143028665 has 8 divisors (see below), whose sum is σ = 184837128. Its totient is φ = 105621120.

The previous prime is 143028647. The next prime is 143028679. The reversal of 143028665 is 566820341.

It can be written as a sum of positive squares in 4 ways, for example, as 7166329 + 135862336 = 2677^2 + 11656^2 .

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

It is not a de Polignac number, because 143028665 - 2¹⁰ = 143027641 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1100156 + ... + 1100285.

It is an arithmetic number, because the mean of its divisors is an integer number (23104641).

Almost surely, 2^143028665 is an apocalyptic number.

It is an amenable number.

143028665 is a deficient number, since it is larger than the sum of its proper divisors (41808463).

143028665 is a wasteful number, since it uses less digits than its factorization.

143028665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200459.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 143028665 is about 11959.4592269049. The cubic root of 143028665 is about 522.9670922168.

The spelling of 143028665 in words is "one hundred forty-three million, twenty-eight thousand, six hundred sixty-five".