28722603808080 has 480 divisors, whose sum is σ = 123938567424000. Its totient is φ = 6060153480192.

The previous prime is 28722603808051. The next prime is 28722603808091. The reversal of 28722603808080 is 8080830622782.

It is a happy number.

28722603808080 is a `hidden beast` number, since 2 + 8 + 7 + 22 + 603 + 8 + 0 + 8 + 0 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9061680 + ... + 11813519.

It is an arithmetic number, because the mean of its divisors is an integer number (258205348800).

Almost surely, 2^{28722603808080} is an apocalyptic number.

28722603808080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28722603808080 is an abundant number, since it is smaller than the sum of its proper divisors (95215963615920).

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

28722603808080 is a wasteful number, since it uses less digits than its factorization.

28722603808080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20875248 (or 20875229 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 54.

The spelling of 28722603808080 in words is "twenty-eight trillion, seven hundred twenty-two billion, six hundred three million, eight hundred eight thousand, eighty".