28709089315 has 4 divisors (see below), whose sum is σ = 34450907184. Its totient is φ = 22967271448.

The previous prime is 28709089301. The next prime is 28709089361. The reversal of 28709089315 is 51398090782.

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 28709089315 - 2¹⁵ = 28709056547 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2870908927 + ... + 2870908936.

It is an arithmetic number, because the mean of its divisors is an integer number (8612726796).

Almost surely, 2^28709089315 is an apocalyptic number.

28709089315 is a deficient number, since it is larger than the sum of its proper divisors (5741817869).

28709089315 is an equidigital number, since it uses as much as digits as its factorization.

28709089315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5741817868.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 28709089315 in words is "twenty-eight billion, seven hundred nine million, eighty-nine thousand, three hundred fifteen".