Base | Representation |
---|---|
bin | 110010101010… |
… | …001100110100 |
3 | 220222200210210 |
4 | 302222030310 |
5 | 11344430202 |
6 | 1152345420 |
7 | 220610232 |
oct | 62521464 |
9 | 26880723 |
10 | 13280052 |
11 | 7550555 |
12 | 4545270 |
13 | 299c826 |
14 | 1a99952 |
15 | 1274c6c |
hex | caa334 |
13280052 has 12 divisors (see below), whose sum is σ = 30986816. Its totient is φ = 4426680.
The previous prime is 13280041. The next prime is 13280089. The reversal of 13280052 is 25008231.
It is a tau number, because it is divible by the number of its divisors (12).
It is a super-2 number, since 2×132800522 = 352719562245408, which contains 22 as substring.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553324 + ... + 553347.
Almost surely, 213280052 is an apocalyptic number.
13280052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
13280052 is an abundant number, since it is smaller than the sum of its proper divisors (17706764).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13280052 is a wasteful number, since it uses less digits than its factorization.
13280052 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1106678 (or 1106676 counting only the distinct ones).
The product of its (nonzero) digits is 480, while the sum is 21.
The square root of 13280052 is about 3644.1805663276. The cubic root of 13280052 is about 236.8099385971.
Adding to 13280052 its reverse (25008231), we get a palindrome (38288283).
The spelling of 13280052 in words is "thirteen million, two hundred eighty thousand, fifty-two".
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