Base | Representation |
---|---|
bin | 1001001110001… |
… | …1101010101101 |
3 | 2200210012201022 |
4 | 2103203222231 |
5 | 34400300021 |
6 | 3501023525 |
7 | 646533233 |
oct | 223435255 |
9 | 80705638 |
10 | 38681261 |
11 | 1a91a893 |
12 | 10b54ba5 |
13 | 8024528 |
14 | 51cc953 |
15 | 35e11ab |
hex | 24e3aad |
38681261 has 2 divisors, whose sum is σ = 38681262. Its totient is φ = 38681260.
The previous prime is 38681257. The next prime is 38681267. The reversal of 38681261 is 16218683.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 30184036 + 8497225 = 5494^2 + 2915^2 .
It is a cyclic number.
It is not a de Polignac number, because 38681261 - 22 = 38681257 is a prime.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (38681267) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19340630 + 19340631.
It is an arithmetic number, because the mean of its divisors is an integer number (19340631).
Almost surely, 238681261 is an apocalyptic number.
It is an amenable number.
38681261 is a deficient number, since it is larger than the sum of its proper divisors (1).
38681261 is an equidigital number, since it uses as much as digits as its factorization.
38681261 is an evil number, because the sum of its binary digits is even.
The product of its digits is 13824, while the sum is 35.
The square root of 38681261 is about 6219.4260989258. The cubic root of 38681261 is about 338.1947601335.
The spelling of 38681261 in words is "thirty-eight million, six hundred eighty-one thousand, two hundred sixty-one".
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