28318020873 has 8 divisors (see below), whose sum is σ = 37758606048. Its totient is φ = 18878058144.

The previous prime is 28318020859. The next prime is 28318020953. The reversal of 28318020873 is 37802081382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28318020873 - 2²¹ = 28315923721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28318020803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36411 + ... + 240752.

It is an arithmetic number, because the mean of its divisors is an integer number (4719825756).

Almost surely, 2^28318020873 is an apocalyptic number.

It is an amenable number.

28318020873 is a deficient number, since it is larger than the sum of its proper divisors (9440585175).

28318020873 is a wasteful number, since it uses less digits than its factorization.

28318020873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311223.

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 28318020873 in words is "twenty-eight billion, three hundred eighteen million, twenty thousand, eight hundred seventy-three".