Base | Representation |
---|---|
bin | 1110110001001… |
… | …01010010010000 |
3 | 22122002222211210 |
4 | 13120211102100 |
5 | 223203302223 |
6 | 20143140120 |
7 | 3033000564 |
oct | 730452220 |
9 | 278088753 |
10 | 123884688 |
11 | 63a25444 |
12 | 355a4640 |
13 | 1c887165 |
14 | 1264b6a4 |
15 | ad21893 |
hex | 7625490 |
123884688 has 20 divisors (see below), whose sum is σ = 320035568. Its totient is φ = 41294880.
The previous prime is 123884659. The next prime is 123884689. The reversal of 123884688 is 886488321.
It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 2580931 = 123884688 / (1 + 2 + 3 + 8 + 8 + 4 + 6 + 8 + 8).
It is a nude number because it is divisible by every one of its digits.
It is not an unprimeable number, because it can be changed into a prime (123884689) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1290418 + ... + 1290513.
Almost surely, 2123884688 is an apocalyptic number.
It is an amenable number.
123884688 is an abundant number, since it is smaller than the sum of its proper divisors (196150880).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
123884688 is a wasteful number, since it uses less digits than its factorization.
123884688 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2580942 (or 2580936 counting only the distinct ones).
The product of its digits is 589824, while the sum is 48.
The square root of 123884688 is about 11130.3498597304. The cubic root of 123884688 is about 498.5084724486.
The spelling of 123884688 in words is "one hundred twenty-three million, eight hundred eighty-four thousand, six hundred eighty-eight".
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