28358117305 has 16 divisors (see below), whose sum is σ = 38946645504. Its totient is φ = 19417809600.

The previous prime is 28358117279. The next prime is 28358117317. The reversal of 28358117305 is 50371185382.

It is not a de Polignac number, because 28358117305 - 2¹⁵ = 28358084537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 553377 + ... + 602446.

It is an arithmetic number, because the mean of its divisors is an integer number (2434165344).

Almost surely, 2^28358117305 is an apocalyptic number.

It is an amenable number.

28358117305 is a deficient number, since it is larger than the sum of its proper divisors (10588528199).

28358117305 is a wasteful number, since it uses less digits than its factorization.

28358117305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156536.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 28358117305 in words is "twenty-eight billion, three hundred fifty-eight million, one hundred seventeen thousand, three hundred five".