20882143 has 2 divisors, whose sum is σ = 20882144. Its totient is φ = 20882142.

The previous prime is 20882131. The next prime is 20882153. The reversal of 20882143 is 34128802.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20882143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20882153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10441071 + 10441072.

It is an arithmetic number, because the mean of its divisors is an integer number (10441072).

Almost surely, 2^20882143 is an apocalyptic number.

20882143 is a deficient number, since it is larger than the sum of its proper divisors (1).

20882143 is an equidigital number, since it uses as much as digits as its factorization.

20882143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 20882143 is about 4569.6983489066. The cubic root of 20882143 is about 275.3753244327.

It can be divided in two parts, 20882 and 143, that added together give a square (21025 = 145²).

The spelling of 20882143 in words is "twenty million, eight hundred eighty-two thousand, one hundred forty-three".