28307558005 has 8 divisors (see below), whose sum is σ = 34145076312. Its totient is φ = 22528708608.

The previous prime is 28307557997. The next prime is 28307558011. The reversal of 28307558005 is 50085570382.

It can be written as a sum of positive squares in 4 ways, for example, as 2187441 + 28305370564 = 1479^2 + 168242^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28307558005 - 2³ = 28307557997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14666164 + ... + 14668093.

It is an arithmetic number, because the mean of its divisors is an integer number (4268134539).

Almost surely, 2^28307558005 is an apocalyptic number.

It is an amenable number.

28307558005 is a deficient number, since it is larger than the sum of its proper divisors (5837518307).

28307558005 is a wasteful number, since it uses less digits than its factorization.

28307558005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29334455.

The product of its (nonzero) digits is 336000, while the sum is 43.

The spelling of 28307558005 in words is "twenty-eight billion, three hundred seven million, five hundred fifty-eight thousand, five".