Base | Representation |
---|---|
bin | 1111110101011… |
… | …00110000010101 |
3 | 100020221101000021 |
4 | 13322230300111 |
5 | 233001000211 |
6 | 21102545141 |
7 | 3202010113 |
oct | 772546025 |
9 | 306841007 |
10 | 132828181 |
11 | 68a83862 |
12 | 385981b1 |
13 | 21698b75 |
14 | 138d8ab3 |
15 | b9db771 |
hex | 7eacc15 |
132828181 has 2 divisors, whose sum is σ = 132828182. Its totient is φ = 132828180.
The previous prime is 132828173. The next prime is 132828193. The reversal of 132828181 is 181828231.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 125216100 + 7612081 = 11190^2 + 2759^2 .
It is a cyclic number.
It is not a de Polignac number, because 132828181 - 23 = 132828173 is a prime.
It is a super-2 number, since 2×1328281812 = 35286651335537522, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (132828281) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66414090 + 66414091.
It is an arithmetic number, because the mean of its divisors is an integer number (66414091).
Almost surely, 2132828181 is an apocalyptic number.
It is an amenable number.
132828181 is a deficient number, since it is larger than the sum of its proper divisors (1).
132828181 is an equidigital number, since it uses as much as digits as its factorization.
132828181 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 6144, while the sum is 34.
The square root of 132828181 is about 11525.1108888375. The cubic root of 132828181 is about 510.2269667718.
Subtracting 132828181 from its reverse (181828231), we obtain a triangular number (49000050 = T9899).
The spelling of 132828181 in words is "one hundred thirty-two million, eight hundred twenty-eight thousand, one hundred eighty-one".
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