143982644 has 12 divisors (see below), whose sum is σ = 271352004. Its totient is φ = 66453504.

The previous prime is 143982617. The next prime is 143982653. The reversal of 143982644 is 446289341.

It can be written as a sum of positive squares in 2 ways, for example, as 99600400 + 44382244 = 9980^2 + 6662^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1384397 + ... + 1384500.

It is an arithmetic number, because the mean of its divisors is an integer number (22612667).

Almost surely, 2^143982644 is an apocalyptic number.

It is an amenable number.

143982644 is a deficient number, since it is larger than the sum of its proper divisors (127369360).

143982644 is a wasteful number, since it uses less digits than its factorization.

143982644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768914 (or 2768912 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 143982644 is about 11999.2768115416. The cubic root of 143982644 is about 524.1272198533.

The spelling of 143982644 in words is "one hundred forty-three million, nine hundred eighty-two thousand, six hundred forty-four".