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17968020 = 22357179239
BaseRepresentation
bin100010010001…
…0101110010100
31020210212111020
41010202232110
514044434040
61441041140
7305503620
oct104425624
936725436
1017968020
11a162704
1260261b0
133951585
14255a180
15189dcd0
hex1122b94

17968020 has 96 divisors (see below), whose sum is σ = 58060800. Its totient is φ = 4066944.

The previous prime is 17968019. The next prime is 17968021. The reversal of 17968020 is 2086971.

It is an interprime number because it is at equal distance from previous prime (17968019) and next prime (17968021).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17968021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75061 + ... + 75299.

It is an arithmetic number, because the mean of its divisors is an integer number (604800).

Almost surely, 217968020 is an apocalyptic number.

17968020 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 17968020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29030400).

17968020 is an abundant number, since it is smaller than the sum of its proper divisors (40092780).

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

17968020 is a wasteful number, since it uses less digits than its factorization.

17968020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 17968020 is about 4238.8701324763. The cubic root of 17968020 is about 261.9188412843.

It can be divided in two parts, 179680 and 20, that added together give a triangular number (179700 = T599).

The spelling of 17968020 in words is "seventeen million, nine hundred sixty-eight thousand, twenty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 179 210 239 358 420 478 537 716 717 895 956 1074 1195 1253 1434 1673 1790 2148 2390 2506 2685 2868 3346 3580 3585 3759 4780 5012 5019 5370 6265 6692 7170 7518 8365 10038 10740 12530 14340 15036 16730 18795 20076 25060 25095 33460 37590 42781 50190 75180 85562 100380 128343 171124 213905 256686 299467 427810 513372 598934 641715 855620 898401 1197868 1283430 1497335 1796802 2566860 2994670 3593604 4492005 5989340 8984010 17968020