Base | Representation |
---|---|
bin | 11010101001011010… |
… | …010010001000011000 |
3 | 2201212000121101200222 |
4 | 122221122102020120 |
5 | 432044140341123 |
6 | 21051051215212 |
7 | 2032014232553 |
oct | 325132221030 |
9 | 81760541628 |
10 | 28612043288 |
11 | 11152830674 |
12 | 5666147508 |
13 | 290c97223a |
14 | 1555d8d69a |
15 | b26d626c8 |
hex | 6a9692218 |
28612043288 has 16 divisors (see below), whose sum is σ = 53917170000. Its totient is φ = 14234131296.
The previous prime is 28612043287. The next prime is 28612043359. The reversal of 28612043288 is 88234021682.
It is a super-3 number, since 3×286120432883 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (28612043287) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8984603 + ... + 8987786.
It is an arithmetic number, because the mean of its divisors is an integer number (3369823125).
Almost surely, 228612043288 is an apocalyptic number.
It is an amenable number.
28612043288 is a deficient number, since it is larger than the sum of its proper divisors (25305126712).
28612043288 is a wasteful number, since it uses less digits than its factorization.
28612043288 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 17972594 (or 17972590 counting only the distinct ones).
The product of its (nonzero) digits is 294912, while the sum is 44.
The spelling of 28612043288 in words is "twenty-eight billion, six hundred twelve million, forty-three thousand, two hundred eighty-eight".
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