28860003173 has 4 divisors (see below), whose sum is σ = 28860824640. Its totient is φ = 28859181708.

The previous prime is 28860003143. The next prime is 28860003217. The reversal of 28860003173 is 37130006882.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37130006882 = 2 ⋅18565003441.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28860003173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28860003103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355565 + ... + 429122.

It is an arithmetic number, because the mean of its divisors is an integer number (7215206160).

Almost surely, 2^28860003173 is an apocalyptic number.

It is an amenable number.

28860003173 is a deficient number, since it is larger than the sum of its proper divisors (821467).

28860003173 is an equidigital number, since it uses as much as digits as its factorization.

28860003173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821466.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 28860003173 in words is "twenty-eight billion, eight hundred sixty million, three thousand, one hundred seventy-three".