Base | Representation |
---|---|
bin | 100101010110010110000 |
3 | 2022011211000 |
4 | 10222302300 |
5 | 303130411 |
6 | 42122000 |
7 | 13255044 |
oct | 4526260 |
9 | 2264730 |
10 | 1223856 |
11 | 766557 |
12 | 4b0300 |
13 | 33b09a |
14 | 23c024 |
15 | 192956 |
hex | 12acb0 |
1223856 has 40 divisors (see below), whose sum is σ = 3514160. Its totient is φ = 407808.
The previous prime is 1223777. The next prime is 1223857. The reversal of 1223856 is 6583221.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is not an unprimeable number, because it can be changed into a prime (1223857) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 985 + ... + 1848.
It is an arithmetic number, because the mean of its divisors is an integer number (87854).
21223856 is an apocalyptic number.
1223856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.
It is an amenable number.
1223856 is an abundant number, since it is smaller than the sum of its proper divisors (2290304).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1223856 is a wasteful number, since it uses less digits than its factorization.
1223856 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2850 (or 2838 counting only the distinct ones).
The product of its digits is 2880, while the sum is 27.
The square root of 1223856 is about 1106.2802538236. The cubic root of 1223856 is about 106.9654297730.
The spelling of 1223856 in words is "one million, two hundred twenty-three thousand, eight hundred fifty-six".
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