28076858143 has 4 divisors (see below), whose sum is σ = 28537134568. Its totient is φ = 27616581720.

The previous prime is 28076858141. The next prime is 28076858153. The reversal of 28076858143 is 34185867082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34185867082 = 2 ⋅17092933541.

It is a cyclic number.

It is not a de Polignac number, because 28076858143 - 2¹ = 28076858141 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 (28076858141) 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, 230138121 + ... + 230138242.

It is an arithmetic number, because the mean of its divisors is an integer number (7134283642).

Almost surely, 2^28076858143 is an apocalyptic number.

28076858143 is a deficient number, since it is larger than the sum of its proper divisors (460276425).

28076858143 is an equidigital number, since it uses as much as digits as its factorization.

28076858143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460276424.

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 28076858143 in words is "twenty-eight billion, seventy-six million, eight hundred fifty-eight thousand, one hundred forty-three".