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13618960 = 2453743107
BaseRepresentation
bin110011111100…
…111100010000
3221121220200221
4303330330100
511441301320
61203522424
7223521265
oct63747420
927556627
1013618960
117762143
124689414
132a8ab74
141b4726c
1512e03aa
hexcfcf10

13618960 has 80 divisors (see below), whose sum is σ = 33587136. Its totient is φ = 5128704.

The previous prime is 13618949. The next prime is 13618961. The reversal of 13618960 is 6981631.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13618961) 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 15 ways as a sum of consecutive naturals, for example, 127227 + ... + 127333.

Almost surely, 213618960 is an apocalyptic number.

13618960 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 13618960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16793568).

13618960 is an abundant number, since it is smaller than the sum of its proper divisors (19968176).

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

13618960 is a wasteful number, since it uses less digits than its factorization.

13618960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 13618960 is about 3690.3875135275. The cubic root of 13618960 is about 238.8075106104.

The spelling of 13618960 in words is "thirteen million, six hundred eighteen thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 37 40 43 74 80 86 107 148 172 185 214 215 296 344 370 428 430 535 592 688 740 856 860 1070 1480 1591 1712 1720 2140 2960 3182 3440 3959 4280 4601 6364 7918 7955 8560 9202 12728 15836 15910 18404 19795 23005 25456 31672 31820 36808 39590 46010 63344 63640 73616 79180 92020 127280 158360 170237 184040 316720 340474 368080 680948 851185 1361896 1702370 2723792 3404740 6809480 13618960