Base | Representation |
---|---|
bin | 110000110010… |
… | …000100111001 |
3 | 220001200212120 |
4 | 300302010321 |
5 | 11233204100 |
6 | 1134031453 |
7 | 213460605 |
oct | 60620471 |
9 | 26050776 |
10 | 12788025 |
11 | 7244918 |
12 | 4348589 |
13 | 28598a3 |
14 | 19ac505 |
15 | 11c90a0 |
hex | c32139 |
12788025 has 24 divisors (see below), whose sum is σ = 21290304. Its totient is φ = 6772800.
The previous prime is 12788021. The next prime is 12788033. The reversal of 12788025 is 52088721.
It is not a de Polignac number, because 12788025 - 22 = 12788021 is a prime.
It is not an unprimeable number, because it can be changed into a prime (12788021) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12015 + ... + 13035.
It is an arithmetic number, because the mean of its divisors is an integer number (887096).
Almost surely, 212788025 is an apocalyptic number.
12788025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
12788025 is a deficient number, since it is larger than the sum of its proper divisors (8502279).
12788025 is a wasteful number, since it uses less digits than its factorization.
12788025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1201 (or 1196 counting only the distinct ones).
The product of its (nonzero) digits is 8960, while the sum is 33.
The square root of 12788025 is about 3576.0348152668. The cubic root of 12788025 is about 233.8484481455.
The spelling of 12788025 in words is "twelve million, seven hundred eighty-eight thousand, twenty-five".
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