Base | Representation |
---|---|
bin | 110001001010… |
… | …100001000101 |
3 | 220020210012021 |
4 | 301022201011 |
5 | 11244410013 |
6 | 1140123141 |
7 | 214355506 |
oct | 61124105 |
9 | 26223167 |
10 | 12888133 |
11 | 7303055 |
12 | 43964b1 |
13 | 289331b |
14 | 19d6bad |
15 | 11e8a8d |
hex | c4a845 |
12888133 has 4 divisors (see below), whose sum is σ = 13069728. Its totient is φ = 12706540.
The previous prime is 12888131. The next prime is 12888143. The reversal of 12888133 is 33188821.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 12888133 - 21 = 12888131 is a prime.
It is a super-2 number, since 2×128881332 = 332207944451378, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12888131) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90691 + ... + 90832.
It is an arithmetic number, because the mean of its divisors is an integer number (3267432).
Almost surely, 212888133 is an apocalyptic number.
It is an amenable number.
12888133 is a deficient number, since it is larger than the sum of its proper divisors (181595).
12888133 is an equidigital number, since it uses as much as digits as its factorization.
12888133 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 181594.
The product of its digits is 9216, while the sum is 34.
The square root of 12888133 is about 3590.0045960973. The cubic root of 12888133 is about 234.4570716545.
The spelling of 12888133 in words is "twelve million, eight hundred eighty-eight thousand, one hundred thirty-three".
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