28918918608 has 40 divisors (see below), whose sum is σ = 74789686368. Its totient is φ = 9628996992.

The previous prime is 28918918579. The next prime is 28918918643. The reversal of 28918918608 is 80681981982.

It is a super-2 number, since 2×28918918608² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288591 + ... + 375662.

Almost surely, 2^28918918608 is an apocalyptic number.

It is an amenable number.

28918918608 is an abundant number, since it is smaller than the sum of its proper divisors (45870767760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28918918608 is a wasteful number, since it uses less digits than its factorization.

28918918608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665171 (or 665165 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 60.

The spelling of 28918918608 in words is "twenty-eight billion, nine hundred eighteen million, nine hundred eighteen thousand, six hundred eight".