20143056 has 40 divisors (see below), whose sum is σ = 53718784. Its totient is φ = 6497280.

The previous prime is 20143043. The next prime is 20143061. The reversal of 20143056 is 65034102.

It is a happy number.

It is a congruent 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, 5281 + ... + 8256.

Almost surely, 2^20143056 is an apocalyptic number.

It is an amenable number.

20143056 is an abundant number, since it is smaller than the sum of its proper divisors (33575728).

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

20143056 is a wasteful number, since it uses less digits than its factorization.

20143056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13579 (or 13573 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 20143056 is about 4488.1016031280. The cubic root of 20143056 is about 272.0874142340.

Adding to 20143056 its reverse (65034102), we get a palindrome (85177158).

The spelling of 20143056 in words is "twenty million, one hundred forty-three thousand, fifty-six".