Base | Representation |
---|---|
bin | 11111011000110101111111 |
3 | 120111001000000 |
4 | 133120311333 |
5 | 4101300343 |
6 | 452205343 |
7 | 126636663 |
oct | 37306577 |
9 | 16431000 |
10 | 8228223 |
11 | 470aa93 |
12 | 2909853 |
13 | 1921293 |
14 | 11428a3 |
15 | ac7ed3 |
hex | 7d8d7f |
8228223 has 14 divisors (see below), whose sum is σ = 12337784. Its totient is φ = 5484996.
The previous prime is 8228201. The next prime is 8228263. The reversal of 8228223 is 3228228.
It is not a de Polignac number, because 8228223 - 25 = 8228191 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a Duffinian number.
8228223 is a lucky number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (8228263) 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 13 ways as a sum of consecutive naturals, for example, 4915 + ... + 6372.
Almost surely, 28228223 is an apocalyptic number.
8228223 is a deficient number, since it is larger than the sum of its proper divisors (4109561).
8228223 is an equidigital number, since it uses as much as digits as its factorization.
8228223 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11305 (or 11290 counting only the distinct ones).
The product of its digits is 3072, while the sum is 27.
The square root of 8228223 is about 2868.4879292059. The cubic root of 8228223 is about 201.8840542990.
It can be divided in two parts, 822 and 8223, that added together give a triangular number (9045 = T134).
The spelling of 8228223 in words is "eight million, two hundred twenty-eight thousand, two hundred twenty-three".
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