28126030972312 has 96 divisors (see below), whose sum is σ = 69951457336320. Its totient is φ = 10472264893440.

The previous prime is 28126030972307. The next prime is 28126030972357. The reversal of 28126030972312 is 21327903062182.

It is a super-2 number, since 2×28126030972312² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162243864 + ... + 162417127.

It is an arithmetic number, because the mean of its divisors is an integer number (728661013920).

Almost surely, 2^{28126030972312} is an apocalyptic number.

It is an amenable number.

28126030972312 is an abundant number, since it is smaller than the sum of its proper divisors (41825426364008).

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

28126030972312 is a wasteful number, since it uses less digits than its factorization.

28126030972312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324661041 (or 324661030 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 28126030972312 in words is "twenty-eight trillion, one hundred twenty-six billion, thirty million, nine hundred seventy-two thousand, three hundred twelve".