28734650208 has 240 divisors, whose sum is σ = 92963399760. Its totient is φ = 8706424320.

The previous prime is 28734650177. The next prime is 28734650213. The reversal of 28734650208 is 80205643782.

28734650208 is a `hidden beast` number, since 287 + 346 + 5 + 0 + 20 + 8 = 666.

It is a super-2 number, since 2×28734650208² (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 39 ways as a sum of consecutive naturals, for example, 3445788 + ... + 3454116.

It is an arithmetic number, because the mean of its divisors is an integer number (387347499).

Almost surely, 2^28734650208 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 28734650208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46481699880).

28734650208 is an abundant number, since it is smaller than the sum of its proper divisors (64228749552).

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

28734650208 is an equidigital number, since it uses as much as digits as its factorization.

28734650208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8384 (or 8345 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 28734650208 in words is "twenty-eight billion, seven hundred thirty-four million, six hundred fifty thousand, two hundred eight".