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13126280 = 2352291433
BaseRepresentation
bin110010000100…
…101010001000
3220200212212112
4302010222020
511330020110
61145201452
7216400016
oct62045210
926625775
1013126280
117455a72
124490288
13294783b
141a598b6
151244405
hexc84a88

13126280 has 32 divisors (see below), whose sum is σ = 29683800. Its totient is φ = 5223936.

The previous prime is 13126277. The next prime is 13126291. The reversal of 13126280 is 8262131.

It can be written as a sum of positive squares in 4 ways, for example, as 13118884 + 7396 = 3622^2 + 86^2 .

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, 8444 + ... + 9876.

Almost surely, 213126280 is an apocalyptic number.

13126280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13126280 is an abundant number, since it is smaller than the sum of its proper divisors (16557520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13126280 is a wasteful number, since it uses less digits than its factorization.

13126280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673 (or 1669 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 13126280 is about 3623.0208390237. The cubic root of 13126280 is about 235.8923668914.

The spelling of 13126280 in words is "thirteen million, one hundred twenty-six thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 229 458 916 1145 1433 1832 2290 2866 4580 5732 7165 9160 11464 14330 28660 57320 328157 656314 1312628 1640785 2625256 3281570 6563140 13126280