28938534912 has 408 divisors, whose sum is σ = 98364066944. Its totient is φ = 8026324992.

The previous prime is 28938534907. The next prime is 28938534949. The reversal of 28938534912 is 21943583982.

28938534912 is a `hidden beast` number, since 2 + 8 + 93 + 8 + 534 + 9 + 12 = 666.

It is a super-3 number, since 3×28938534912³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177536943 + ... + 177537105.

Almost surely, 2^28938534912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28938534912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49182033472).

28938534912 is an abundant number, since it is smaller than the sum of its proper divisors (69425532032).

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

28938534912 is an equidigital number, since it uses as much as digits as its factorization.

28938534912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 218 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The spelling of 28938534912 in words is "twenty-eight billion, nine hundred thirty-eight million, five hundred thirty-four thousand, nine hundred twelve".