28860006321 has 16 divisors (see below), whose sum is σ = 43393710400. Its totient is φ = 18952838784.

The previous prime is 28860006317. The next prime is 28860006349. The reversal of 28860006321 is 12360006882.

28860006321 is a `hidden beast` number, since 28 + 8 + 600 + 0 + 6 + 3 + 21 = 666.

It is not a de Polignac number, because 28860006321 - 2² = 28860006317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28860006391) 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 15 ways as a sum of consecutive naturals, for example, 7974976 + ... + 7978593.

It is an arithmetic number, because the mean of its divisors is an integer number (2712106900).

Almost surely, 2^28860006321 is an apocalyptic number.

It is an amenable number.

28860006321 is a deficient number, since it is larger than the sum of its proper divisors (14533704079).

28860006321 is a wasteful number, since it uses less digits than its factorization.

28860006321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15953645 (or 15953639 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 28860006321 in words is "twenty-eight billion, eight hundred sixty million, six thousand, three hundred twenty-one".