30722128815228 has 12 divisors (see below), whose sum is σ = 71684967235560. Its totient is φ = 10240709605072.

The previous prime is 30722128815227. The next prime is 30722128815233. The reversal of 30722128815228 is 82251882122703.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30722128815223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1280088700623 + ... + 1280088700646.

It is an arithmetic number, because the mean of its divisors is an integer number (5973747269630).

Almost surely, 2^{30722128815228} is an apocalyptic number.

It is an amenable number.

30722128815228 is an abundant number, since it is smaller than the sum of its proper divisors (40962838420332).

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

30722128815228 is a wasteful number, since it uses less digits than its factorization.

30722128815228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560177401276 (or 2560177401274 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 51.

The spelling of 30722128815228 in words is "thirty trillion, seven hundred twenty-two billion, one hundred twenty-eight million, eight hundred fifteen thousand, two hundred twenty-eight".