Base | Representation |
---|---|
bin | 10001000000110101… |
… | …101000011001110000 |
3 | 1202011002211210102010 |
4 | 101000311220121300 |
5 | 244403010421003 |
6 | 12220403322520 |
7 | 1214455430331 |
oct | 210065503160 |
9 | 52132753363 |
10 | 18267670128 |
11 | 7824694a44 |
12 | 3659980440 |
13 | 195181ba86 |
14 | c541c6288 |
15 | 71db2d003 |
hex | 440d68670 |
18267670128 has 20 divisors (see below), whose sum is σ = 47191481288. Its totient is φ = 6089223360.
The previous prime is 18267670103. The next prime is 18267670129. The reversal of 18267670128 is 82107676281.
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: 380576461 = 18267670128 / (1 + 8 + 2 + 6 + 7 + 6 + 7 + 0 + 1 + 2 + 8).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18267670129) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190288183 + ... + 190288278.
Almost surely, 218267670128 is an apocalyptic number.
It is an amenable number.
18267670128 is an abundant number, since it is smaller than the sum of its proper divisors (28923811160).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18267670128 is a wasteful number, since it uses less digits than its factorization.
18267670128 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 380576472 (or 380576466 counting only the distinct ones).
The product of its (nonzero) digits is 451584, while the sum is 48.
The spelling of 18267670128 in words is "eighteen billion, two hundred sixty-seven million, six hundred seventy thousand, one hundred twenty-eight".
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