28128289159164 has 24 divisors (see below), whose sum is σ = 65719375749328. Its totient is φ = 9363710522880.

The previous prime is 28128289159151. The next prime is 28128289159189. The reversal of 28128289159164 is 46195198282182.

It is a happy number.

It is a super-2 number, since 2×28128289159164² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28128289159095 and 28128289159104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1548223477 + ... + 1548241644.

Almost surely, 2^{28128289159164} is an apocalyptic number.

It is an amenable number.

28128289159164 is an abundant number, since it is smaller than the sum of its proper divisors (37591086590164).

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

28128289159164 is a wasteful number, since it uses less digits than its factorization.

28128289159164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3096465885 (or 3096465883 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 66.

The spelling of 28128289159164 in words is "twenty-eight trillion, one hundred twenty-eight billion, two hundred eighty-nine million, one hundred fifty-nine thousand, one hundred sixty-four".