Base | Representation |
---|---|
bin | 11010100010110111… |
… | …010101011000100100 |
3 | 2201120100221201002221 |
4 | 122202313111120210 |
5 | 431333031441101 |
6 | 21032125242124 |
7 | 2026211600200 |
oct | 324267253044 |
9 | 81510851087 |
10 | 28502218276 |
11 | 110a68394a4 |
12 | 5635403344 |
13 | 28c2c9b71c |
14 | 1545561b00 |
15 | b1c3bbaa1 |
hex | 6a2dd5624 |
28502218276 has 81 divisors (see below), whose sum is σ = 60108960177. Its totient is φ = 11790807840.
The previous prime is 28502218271. The next prime is 28502218279. The reversal of 28502218276 is 67281220582.
The square root of 28502218276 is 168826.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in only one way, i.e., 6728264676 + 21773953600 = 82026^2 + 147560^2 .
It is a super-3 number, since 3×285022182763 (a number of 32 digits) contains 333 as substring.
It is not an unprimeable number, because it can be changed into a prime (28502218271) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 73270290 + ... + 73270678.
Almost surely, 228502218276 is an apocalyptic number.
28502218276 is the 168826-th square number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 28502218276
28502218276 is an abundant number, since it is smaller than the sum of its proper divisors (31606741901).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28502218276 is an equidigital number, since it uses as much as digits as its factorization.
28502218276 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 858 (or 429 counting only the distinct ones).
The product of its (nonzero) digits is 215040, while the sum is 43.
The spelling of 28502218276 in words is "twenty-eight billion, five hundred two million, two hundred eighteen thousand, two hundred seventy-six".
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