28320818630 has 16 divisors (see below), whose sum is σ = 54898817904. Its totient is φ = 10456917600.

The previous prime is 28320818621. The next prime is 28320818633. The reversal of 28320818630 is 3681802382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28320818633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108926096 + ... + 108926355.

It is an arithmetic number, because the mean of its divisors is an integer number (3431176119).

Almost surely, 2^28320818630 is an apocalyptic number.

28320818630 is a deficient number, since it is larger than the sum of its proper divisors (26577999274).

28320818630 is a wasteful number, since it uses less digits than its factorization.

28320818630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217852471.

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 28320818630 in words is "twenty-eight billion, three hundred twenty million, eight hundred eighteen thousand, six hundred thirty".