28073375018 has 8 divisors (see below), whose sum is σ = 45349298148. Its totient is φ = 12956942304.

The previous prime is 28073374993. The next prime is 28073375023. The reversal of 28073375018 is 81057337082.

It can be written as a sum of positive squares in 2 ways, for example, as 28050555289 + 22819729 = 167483^2 + 4777^2 .

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

It is a super-2 number, since 2×28073375018² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28073375018.

It is an unprimeable number.

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, 539872571 + ... + 539872622.

Almost surely, 2^28073375018 is an apocalyptic number.

28073375018 is a deficient number, since it is larger than the sum of its proper divisors (17275923130).

28073375018 is a wasteful number, since it uses less digits than its factorization.

28073375018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079745208.

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 28073375018 in words is "twenty-eight billion, seventy-three million, three hundred seventy-five thousand, eighteen".