28095143 has 4 divisors (see below), whose sum is σ = 28692960. Its totient is φ = 27497328.

The previous prime is 28095131. The next prime is 28095149. The reversal of 28095143 is 34159082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28095143 - 2⁶ = 28095079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28095149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298838 + ... + 298931.

It is an arithmetic number, because the mean of its divisors is an integer number (7173240).

Almost surely, 2^28095143 is an apocalyptic number.

28095143 is a deficient number, since it is larger than the sum of its proper divisors (597817).

28095143 is an equidigital number, since it uses as much as digits as its factorization.

28095143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597816.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 28095143 is about 5300.4851664730. The cubic root of 28095143 is about 304.0024490511.

The spelling of 28095143 in words is "twenty-eight million, ninety-five thousand, one hundred forty-three".