143428866 has 64 divisors (see below), whose sum is σ = 338300928. Its totient is φ = 39691008.

The previous prime is 143428861. The next prime is 143428871. The reversal of 143428866 is 668824341.

It is an interprime number because it is at equal distance from previous prime (143428861) and next prime (143428871).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (143428861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222741 + ... + 223383.

It is an arithmetic number, because the mean of its divisors is an integer number (5285952).

Almost surely, 2^143428866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143428866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169150464).

143428866 is an abundant number, since it is smaller than the sum of its proper divisors (194872062).

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

143428866 is a wasteful number, since it uses less digits than its factorization.

143428866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815.

The product of its digits is 221184, while the sum is 42.

The square root of 143428866 is about 11976.1791068771. The cubic root of 143428866 is about 523.4544002521.

The spelling of 143428866 in words is "one hundred forty-three million, four hundred twenty-eight thousand, eight hundred sixty-six".