28871420143 has 2 divisors, whose sum is σ = 28871420144. Its totient is φ = 28871420142.

The previous prime is 28871420129. The next prime is 28871420273. The reversal of 28871420143 is 34102417882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28871420143 - 2²¹ = 28869322991 is a prime.

It is a super-2 number, since 2×28871420143² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28871420096 and 28871420105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28871400143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14435710071 + 14435710072.

It is an arithmetic number, because the mean of its divisors is an integer number (14435710072).

Almost surely, 2^28871420143 is an apocalyptic number.

28871420143 is a deficient number, since it is larger than the sum of its proper divisors (1).

28871420143 is an equidigital number, since it uses as much as digits as its factorization.

28871420143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86016, while the sum is 40.

The spelling of 28871420143 in words is "twenty-eight billion, eight hundred seventy-one million, four hundred twenty thousand, one hundred forty-three".