Base | Representation |
---|---|
bin | 101111101100… |
… | …000011011101 |
3 | 212112010102220 |
4 | 233230003131 |
5 | 11200014323 |
6 | 1123535553 |
7 | 211154454 |
oct | 57540335 |
9 | 25463386 |
10 | 12501213 |
11 | 706938a |
12 | 422a5b9 |
13 | 278918a |
14 | 1935b9b |
15 | 116e0e3 |
hex | bec0dd |
12501213 has 16 divisors (see below), whose sum is σ = 17571840. Its totient is φ = 7889904.
The previous prime is 12501193. The next prime is 12501257. The reversal of 12501213 is 31210521.
It is not a de Polignac number, because 12501213 - 218 = 12239069 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 12501192 and 12501201.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12501283) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6228 + ... + 7986.
It is an arithmetic number, because the mean of its divisors is an integer number (1098240).
Almost surely, 212501213 is an apocalyptic number.
It is an amenable number.
12501213 is a deficient number, since it is larger than the sum of its proper divisors (5070627).
12501213 is a wasteful number, since it uses less digits than its factorization.
12501213 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1888.
The product of its (nonzero) digits is 60, while the sum is 15.
The square root of 12501213 is about 3535.7054458764. The cubic root of 12501213 is about 232.0869484342.
Adding to 12501213 its reverse (31210521), we get a palindrome (43711734).
The spelling of 12501213 in words is "twelve million, five hundred one thousand, two hundred thirteen".
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