Base | Representation |
---|---|
bin | 110010100001… |
… | …101101100000 |
3 | 220220221002221 |
4 | 302201231200 |
5 | 11342322110 |
6 | 1151520424 |
7 | 220403656 |
oct | 62415540 |
9 | 26827087 |
10 | 13245280 |
11 | 7527414 |
12 | 4529114 |
13 | 2989a59 |
14 | 1a8add6 |
15 | 12697da |
hex | ca1b60 |
13245280 has 48 divisors (see below), whose sum is σ = 32946480. Its totient is φ = 5018112.
The previous prime is 13245269. The next prime is 13245301. The reversal of 13245280 is 8254231.
It is a congruent number.
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, 862 + ... + 5218.
It is an arithmetic number, because the mean of its divisors is an integer number (686385).
Almost surely, 213245280 is an apocalyptic number.
13245280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 13245280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16473240).
13245280 is an abundant number, since it is smaller than the sum of its proper divisors (19701200).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13245280 is a wasteful number, since it uses less digits than its factorization.
13245280 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4391 (or 4383 counting only the distinct ones).
The product of its (nonzero) digits is 1920, while the sum is 25.
The square root of 13245280 is about 3639.4065450290. The cubic root of 13245280 is about 236.6030731294.
The spelling of 13245280 in words is "thirteen million, two hundred forty-five thousand, two hundred eighty".
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