28860233689 has 15 divisors (see below), whose sum is σ = 33677983157. Its totient is φ = 24730208076.

The previous prime is 28860233681. The next prime is 28860233693. The reversal of 28860233689 is 98633206882.

The square root of 28860233689 is 169883.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 28860233689 - 2³ = 28860233681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28860233681) by changing a digit.

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 14 ways as a sum of consecutive naturals, for example, 8322534 + ... + 8326000.

Almost surely, 2^28860233689 is an apocalyptic number.

28860233689 is the 169883-rd square number.

28860233689 is the 84942-nd centered octagonal number.

It is an amenable number.

28860233689 is a deficient number, since it is larger than the sum of its proper divisors (4817749468).

28860233689 is an frugal number, since it uses more digits than its factorization.

28860233689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6962 (or 3474 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 55.

The spelling of 28860233689 in words is "twenty-eight billion, eight hundred sixty million, two hundred thirty-three thousand, six hundred eighty-nine".