28861860705 has 16 divisors (see below), whose sum is σ = 46191211200. Its totient is φ = 15388914368.

The previous prime is 28861860691. The next prime is 28861860739. The reversal of 28861860705 is 50706816882.

It is a cyclic number.

It is not a de Polignac number, because 28861860705 - 2¹⁰ = 28861859681 is a prime.

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, 195930 + ... + 310019.

It is an arithmetic number, because the mean of its divisors is an integer number (2886950700).

Almost surely, 2^28861860705 is an apocalyptic number.

It is an amenable number.

28861860705 is a deficient number, since it is larger than the sum of its proper divisors (17329350495).

28861860705 is a wasteful number, since it uses less digits than its factorization.

28861860705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509760.

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 28861860705 in words is "twenty-eight billion, eight hundred sixty-one million, eight hundred sixty thousand, seven hundred five".