28064817830 has 64 divisors (see below), whose sum is σ = 59431173120. Its totient is φ = 9340458624.

The previous prime is 28064817827. The next prime is 28064817839. The reversal of 28064817830 is 3871846082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28064817839) 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, 1124669 + ... + 1149351.

It is an arithmetic number, because the mean of its divisors is an integer number (928612080).

Almost surely, 2^28064817830 is an apocalyptic number.

28064817830 is an abundant number, since it is smaller than the sum of its proper divisors (31366355290).

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

28064817830 is a wasteful number, since it uses less digits than its factorization.

28064817830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25173.

The product of its (nonzero) digits is 516096, while the sum is 47.

The spelling of 28064817830 in words is "twenty-eight billion, sixty-four million, eight hundred seventeen thousand, eight hundred thirty".