28228670469320 has 64 divisors (see below), whose sum is σ = 63637568838000. Its totient is φ = 11269611859968.

The previous prime is 28228670469317. The next prime is 28228670469323. The reversal of 28228670469320 is 2396407682282.

28228670469320 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (28228670469317) and next prime (28228670469323).

It can be written as a sum of positive squares in 8 ways, for example, as 7432133725636 + 20796536743684 = 2726194^2 + 4560322^2 .

It is a super-2 number, since 2×28228670469320² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28228670469320.

It is not an unprimeable number, because it can be changed into a prime (28228670469323) 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 15 ways as a sum of consecutive naturals, for example, 42709526 + ... + 43365434.

Almost surely, 2^{28228670469320} is an apocalyptic number.

28228670469320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28228670469320 is an abundant number, since it is smaller than the sum of its proper divisors (35408898368680).

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

28228670469320 is a wasteful number, since it uses less digits than its factorization.

28228670469320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658002 (or 657998 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 59.

The spelling of 28228670469320 in words is "twenty-eight trillion, two hundred twenty-eight billion, six hundred seventy million, four hundred sixty-nine thousand, three hundred twenty".