28768065330 has 64 divisors (see below), whose sum is σ = 71427920256. Its totient is φ = 7410240000.

The previous prime is 28768065299. The next prime is 28768065331. The reversal of 28768065330 is 3356086782.

It is a super-2 number, since 2×28768065330² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28768065330.

It is not an unprimeable number, because it can be changed into a prime (28768065331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8445 + ... + 240015.

It is an arithmetic number, because the mean of its divisors is an integer number (1116061254).

Almost surely, 2^28768065330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28768065330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35713960128).

28768065330 is an abundant number, since it is smaller than the sum of its proper divisors (42659854926).

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

28768065330 is a wasteful number, since it uses less digits than its factorization.

28768065330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231723.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 28768065330 in words is "twenty-eight billion, seven hundred sixty-eight million, sixty-five thousand, three hundred thirty".