Base | Representation |
---|---|
bin | 110010100011… |
… | …011100011101 |
3 | 220221021211221 |
4 | 302203130131 |
5 | 11343034011 |
6 | 1152013341 |
7 | 220433452 |
oct | 62433435 |
9 | 26837757 |
10 | 13252381 |
11 | 753178a |
12 | 4531251 |
13 | 299005c |
14 | 1a8d829 |
15 | 126b971 |
hex | ca371d |
13252381 has 2 divisors, whose sum is σ = 13252382. Its totient is φ = 13252380.
The previous prime is 13252373. The next prime is 13252397. The reversal of 13252381 is 18325231.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 8608356 + 4644025 = 2934^2 + 2155^2 .
It is a cyclic number.
It is not a de Polignac number, because 13252381 - 23 = 13252373 is a prime.
It is a super-2 number, since 2×132523812 = 351251204338322, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (13252321) 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 as a sum of consecutive naturals, namely, 6626190 + 6626191.
It is an arithmetic number, because the mean of its divisors is an integer number (6626191).
Almost surely, 213252381 is an apocalyptic number.
It is an amenable number.
13252381 is a deficient number, since it is larger than the sum of its proper divisors (1).
13252381 is an equidigital number, since it uses as much as digits as its factorization.
13252381 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 1440, while the sum is 25.
The square root of 13252381 is about 3640.3819854515. The cubic root of 13252381 is about 236.6453477678.
The spelling of 13252381 in words is "thirteen million, two hundred fifty-two thousand, three hundred eighty-one".
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