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13204750 = 2531317239
BaseRepresentation
bin110010010111…
…110100001110
3220211212111211
4302113310032
511340023000
61151005034
7220144546
oct62276416
926755454
1013204750
1174a9a19
12450977a
132974480
141a7a326
15125c7ba
hexc97d0e

13204750 has 64 divisors (see below), whose sum is σ = 28304640. Its totient is φ = 4569600.

The previous prime is 13204727. The next prime is 13204759. The reversal of 13204750 is 5740231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13204759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55131 + ... + 55369.

It is an arithmetic number, because the mean of its divisors is an integer number (442260).

It is a vampire number, since it can be written as 31074250 (with its own digits).

Almost surely, 213204750 is an apocalyptic number.

13204750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13204750 is an abundant number, since it is smaller than the sum of its proper divisors (15099890).

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

13204750 is a wasteful number, since it uses less digits than its factorization.

13204750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 13204750 is about 3633.8340633551. The cubic root of 13204750 is about 236.3614947358.

Adding to 13204750 its reverse (5740231), we get a palindrome (18944981).

The spelling of 13204750 in words is "thirteen million, two hundred four thousand, seven hundred fifty".

Divisors: 1 2 5 10 13 17 25 26 34 50 65 85 125 130 170 221 239 250 325 425 442 478 650 850 1105 1195 1625 2125 2210 2390 3107 3250 4063 4250 5525 5975 6214 8126 11050 11950 15535 20315 27625 29875 31070 40630 52819 55250 59750 77675 101575 105638 155350 203150 264095 388375 507875 528190 776750 1015750 1320475 2640950 6602375 13204750