Base | Representation |
---|---|
bin | 110100010010… |
… | …000000001110 |
3 | 221210022001010 |
4 | 310102000032 |
5 | 12002031410 |
6 | 1205430050 |
7 | 224330640 |
oct | 64220016 |
9 | 27708033 |
10 | 13705230 |
11 | 7810a40 |
12 | 470b326 |
13 | 2abb206 |
14 | 1b6a890 |
15 | 130ac20 |
hex | d1200e |
13705230 has 128 divisors (see below), whose sum is σ = 43545600. Its totient is φ = 2672640.
The previous prime is 13705187. The next prime is 13705231. The reversal of 13705230 is 3250731.
It is a happy number.
13705230 is a nontrivial binomial coefficient, being equal to C(5236, 2).
It is a Harshad number since it is a multiple of its sum of digits (21).
It is a junction number, because it is equal to n+sod(n) for n = 13705197 and 13705206.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13705231) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39096 + ... + 39444.
It is an arithmetic number, because the mean of its divisors is an integer number (340200).
Almost surely, 213705230 is an apocalyptic number.
13705230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
13705230 is the 5235-th triangular number and also the 2618-th hexagonal number.
It is a practical number, because each smaller number is the sum of distinct divisors of 13705230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21772800).
13705230 is an abundant number, since it is smaller than the sum of its proper divisors (29840370).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13705230 is a wasteful number, since it uses less digits than its factorization.
13705230 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 394.
The product of its (nonzero) digits is 630, while the sum is 21.
The square root of 13705230 is about 3702.0575360197. The cubic root of 13705230 is about 239.3106957550.
Adding to 13705230 its reverse (3250731), we get a palindrome (16955961).
The spelling of 13705230 in words is "thirteen million, seven hundred five thousand, two hundred thirty".
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