28220600238912 has 224 divisors, whose sum is σ = 85353372640640. Its totient is φ = 9136752721920.

The previous prime is 28220600238869. The next prime is 28220600238937. The reversal of 28220600238912 is 21983200602282.

28220600238912 is a `hidden beast` number, since 2 + 8 + 2 + 2 + 0 + 600 + 2 + 38 + 9 + 1 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36508587 + ... + 37273557.

Almost surely, 2^{28220600238912} 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 28220600238912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42676686320320).

28220600238912 is an abundant number, since it is smaller than the sum of its proper divisors (57132772401728).

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

28220600238912 is a wasteful number, since it uses less digits than its factorization.

28220600238912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765606 (or 765590 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 28220600238912 in words is "twenty-eight trillion, two hundred twenty billion, six hundred million, two hundred thirty-eight thousand, nine hundred twelve".