Base | Representation |
---|---|
bin | 110010011001… |
… | …111000011010 |
3 | 220212022010011 |
4 | 302121320122 |
5 | 11340310320 |
6 | 1151112134 |
7 | 220211323 |
oct | 62317032 |
9 | 26768104 |
10 | 13213210 |
11 | 750530a |
12 | 451264a |
13 | 297828a |
14 | 1a7d44a |
15 | 126005a |
hex | c99e1a |
13213210 has 16 divisors (see below), whose sum is σ = 24174792. Its totient is φ = 5198400.
The previous prime is 13213159. The next prime is 13213229. The reversal of 13213210 is 1231231.
13213210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 4 ways, for example, as 5612161 + 7601049 = 2369^2 + 2757^2 .
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10221 + ... + 11440.
Almost surely, 213213210 is an apocalyptic number.
13213210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
13213210 is a deficient number, since it is larger than the sum of its proper divisors (10961582).
13213210 is a wasteful number, since it uses less digits than its factorization.
13213210 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 21729.
The product of its (nonzero) digits is 36, while the sum is 13.
The square root of 13213210 is about 3634.9979367257. The cubic root of 13213210 is about 236.4119612059.
Adding to 13213210 its reverse (1231231), we get a palindrome (14444441).
The spelling of 13213210 in words is "thirteen million, two hundred thirteen thousand, two hundred ten".
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