28888822216128 has 56 divisors (see below), whose sum is σ = 87354295752832. Its totient is φ = 8253949204224.

The previous prime is 28888822216103. The next prime is 28888822216141. The reversal of 28888822216128 is 82161222888882.

It is a tau number, because it is divible by the number of its divisors (56).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10747328350 + ... + 10747331037.

Almost surely, 2^{28888822216128} is an apocalyptic number.

28888822216128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28888822216128 is an abundant number, since it is smaller than the sum of its proper divisors (58465473536704).

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

28888822216128 is a wasteful number, since it uses less digits than its factorization.

28888822216128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21494659409 (or 21494659399 counting only the distinct ones).

The product of its digits is 50331648, while the sum is 66.

The spelling of 28888822216128 in words is "twenty-eight trillion, eight hundred eighty-eight billion, eight hundred twenty-two million, two hundred sixteen thousand, one hundred twenty-eight".