28662143 has 2 divisors, whose sum is σ = 28662144. Its totient is φ = 28662142.

The previous prime is 28662133. The next prime is 28662167. The reversal of 28662143 is 34126682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28662143 - 2⁶ = 28662079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28662103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14331071 + 14331072.

It is an arithmetic number, because the mean of its divisors is an integer number (14331072).

Almost surely, 2^28662143 is an apocalyptic number.

28662143 is a deficient number, since it is larger than the sum of its proper divisors (1).

28662143 is an equidigital number, since it uses as much as digits as its factorization.

28662143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 32.

The square root of 28662143 is about 5353.7036712915. The cubic root of 28662143 is about 306.0339112602.

The spelling of 28662143 in words is "twenty-eight million, six hundred sixty-two thousand, one hundred forty-three".