Base | Representation |
---|---|
bin | 110011010101… |
… | …001000001000 |
3 | 221022121222221 |
4 | 303111020020 |
5 | 11421042010 |
6 | 1200223424 |
7 | 222241654 |
oct | 63251010 |
9 | 27277887 |
10 | 13455880 |
11 | 7660669 |
12 | 460ab74 |
13 | 2a31879 |
14 | 1b03a64 |
15 | 12abdda |
hex | cd5208 |
13455880 has 16 divisors (see below), whose sum is σ = 30275820. Its totient is φ = 5382336.
The previous prime is 13455853. The next prime is 13455881. The reversal of 13455880 is 8855431.
It can be written as a sum of positive squares in 2 ways, for example, as 12545764 + 910116 = 3542^2 + 954^2 .
It is not an unprimeable number, because it can be changed into a prime (13455881) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168159 + ... + 168238.
Almost surely, 213455880 is an apocalyptic number.
13455880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
13455880 is an abundant number, since it is smaller than the sum of its proper divisors (16819940).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13455880 is a wasteful number, since it uses less digits than its factorization.
13455880 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 336408 (or 336404 counting only the distinct ones).
The product of its (nonzero) digits is 19200, while the sum is 34.
The square root of 13455880 is about 3668.2257291503. The cubic root of 13455880 is about 237.8504816123.
It can be divided in two parts, 1345 and 5880, that added together give a square (7225 = 852).
The spelling of 13455880 in words is "thirteen million, four hundred fifty-five thousand, eight hundred eighty".
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