28002679135 has 4 divisors (see below), whose sum is σ = 33603214968. Its totient is φ = 22402143304.

The previous prime is 28002679129. The next prime is 28002679139. The reversal of 28002679135 is 53197620082.

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 28002679135 - 2¹⁹ = 28002154847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28002679091 and 28002679100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28002679139) 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, 2800267909 + ... + 2800267918.

It is an arithmetic number, because the mean of its divisors is an integer number (8400803742).

Almost surely, 2^28002679135 is an apocalyptic number.

28002679135 is a deficient number, since it is larger than the sum of its proper divisors (5600535833).

28002679135 is an equidigital number, since it uses as much as digits as its factorization.

28002679135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5600535832.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 28002679135 in words is "twenty-eight billion, two million, six hundred seventy-nine thousand, one hundred thirty-five".