Base | Representation |
---|---|
bin | 110010101010… |
… | …010011000000 |
3 | 220222201100110 |
4 | 302222103000 |
5 | 11344433243 |
6 | 1152351320 |
7 | 220611336 |
oct | 62522300 |
9 | 26881313 |
10 | 13280448 |
11 | 7550885 |
12 | 4545540 |
13 | 299ca6c |
14 | 1a99b56 |
15 | 1274e33 |
hex | caa4c0 |
13280448 has 42 divisors (see below), whose sum is σ = 35271964. Its totient is φ = 4409984.
The previous prime is 13280441. The next prime is 13280467. The reversal of 13280448 is 84408231.
It is not an unprimeable number, because it can be changed into a prime (13280441) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50365 + ... + 50627.
Almost surely, 213280448 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 13280448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17635982).
13280448 is an abundant number, since it is smaller than the sum of its proper divisors (21991516).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13280448 is an frugal number, since it uses more digits than its factorization.
13280448 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 541 (or 268 counting only the distinct ones).
The product of its (nonzero) digits is 6144, while the sum is 30.
The square root of 13280448 is about 3644.2348991249. The cubic root of 13280448 is about 236.8122923982.
Adding to 13280448 its reverse (84408231), we get a palindrome (97688679).
It can be divided in two parts, 132 and 80448, that multiplied together give a triangular number (10619136 = T4608).
The spelling of 13280448 in words is "thirteen million, two hundred eighty thousand, four hundred forty-eight".
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