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13155560 = 23511291031
BaseRepresentation
bin110010001011…
…110011101000
3220202101000222
4302023303220
511331434220
61145545212
7216551255
oct62136350
926671028
1013155560
117475a70
1244a5208
132957c72
141a6642c
15124ce25
hexc8bce8

13155560 has 64 divisors (see below), whose sum is σ = 33436800. Its totient is φ = 4614400.

The previous prime is 13155559. The next prime is 13155587. The reversal of 13155560 is 6555131.

13155560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12245 + ... + 13275.

It is an arithmetic number, because the mean of its divisors is an integer number (522450).

Almost surely, 213155560 is an apocalyptic number.

13155560 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 13155560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16718400).

13155560 is an abundant number, since it is smaller than the sum of its proper divisors (20281240).

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

13155560 is a wasteful number, since it uses less digits than its factorization.

13155560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 13155560 is about 3627.0594150083. The cubic root of 13155560 is about 236.0676335888.

The spelling of 13155560 in words is "thirteen million, one hundred fifty-five thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 11 20 22 29 40 44 55 58 88 110 116 145 220 232 290 319 440 580 638 1031 1160 1276 1595 2062 2552 3190 4124 5155 6380 8248 10310 11341 12760 20620 22682 29899 41240 45364 56705 59798 90728 113410 119596 149495 226820 239192 298990 328889 453640 597980 657778 1195960 1315556 1644445 2631112 3288890 6577780 13155560