28470780589 has 4 divisors (see below), whose sum is σ = 28860791356. Its totient is φ = 28080769824.

The previous prime is 28470780571. The next prime is 28470780647. The reversal of 28470780589 is 98508707482.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18855409225 + 9615371364 = 137315^2 + 98058^2 .

It is a cyclic number.

It is not a de Polignac number, because 28470780589 - 2¹³ = 28470772397 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 (28470780509) 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 3 ways as a sum of consecutive naturals, for example, 195005274 + ... + 195005419.

It is an arithmetic number, because the mean of its divisors is an integer number (7215197839).

Almost surely, 2^28470780589 is an apocalyptic number.

It is an amenable number.

28470780589 is a deficient number, since it is larger than the sum of its proper divisors (390010767).

28470780589 is an equidigital number, since it uses as much as digits as its factorization.

28470780589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390010766.

The product of its (nonzero) digits is 9031680, while the sum is 58.

The spelling of 28470780589 in words is "twenty-eight billion, four hundred seventy million, seven hundred eighty thousand, five hundred eighty-nine".