28560887605 has 8 divisors (see below), whose sum is σ = 35378648064. Its totient is φ = 22111654800.

The previous prime is 28560887599. The next prime is 28560887611. The reversal of 28560887605 is 50678806582.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28560887599) and next prime (28560887611).

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

It is not a de Polignac number, because 28560887605 - 2⁷ = 28560887477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92131741 + ... + 92132050.

It is an arithmetic number, because the mean of its divisors is an integer number (4422331008).

Almost surely, 2^28560887605 is an apocalyptic number.

It is an amenable number.

28560887605 is a deficient number, since it is larger than the sum of its proper divisors (6817760459).

28560887605 is a wasteful number, since it uses less digits than its factorization.

28560887605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184263827.

The product of its (nonzero) digits is 6451200, while the sum is 55.

The spelling of 28560887605 in words is "twenty-eight billion, five hundred sixty million, eight hundred eighty-seven thousand, six hundred five".