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17968080 = 2435132443
BaseRepresentation
bin100010010001…
…0101111010000
31020210212120110
41010202233100
514044434310
61441041320
7305504034
oct104425720
936725513
1017968080
11a162759
126026240
133951600
14255a1c4
15189dd20
hex1122bd0

17968080 has 120 divisors (see below), whose sum is σ = 60451488. Its totient is φ = 4412928.

The previous prime is 17968079. The next prime is 17968103. The reversal of 17968080 is 8086971.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40339 + ... + 40781.

Almost surely, 217968080 is an apocalyptic number.

17968080 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 17968080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30225744).

17968080 is an abundant number, since it is smaller than the sum of its proper divisors (42483408).

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

17968080 is a wasteful number, since it uses less digits than its factorization.

17968080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 17968080 is about 4238.8772098281. The cubic root of 17968080 is about 261.9191328229.

The spelling of 17968080 in words is "seventeen million, nine hundred sixty-eight thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 13 15 16 20 24 26 30 39 40 48 52 60 65 78 80 104 120 130 156 169 195 208 240 260 312 338 390 443 507 520 624 676 780 845 886 1014 1040 1329 1352 1560 1690 1772 2028 2215 2535 2658 2704 3120 3380 3544 4056 4430 5070 5316 5759 6645 6760 7088 8112 8860 10140 10632 11518 13290 13520 17277 17720 20280 21264 23036 26580 28795 34554 35440 40560 46072 53160 57590 69108 74867 86385 92144 106320 115180 138216 149734 172770 224601 230360 276432 299468 345540 374335 449202 460720 598936 691080 748670 898404 1123005 1197872 1382160 1497340 1796808 2246010 2994680 3593616 4492020 5989360 8984040 17968080