Search a number
-
+
18848297460 = 22351746739569
BaseRepresentation
bin10001100011011100…
…100011000111110100
31210122120101201101010
4101203130203013310
5302100131004320
612354144232220
71235035612356
oct214334430764
953576351333
1018848297460
117aa2410943
1237a030b670
131a14bc3945
14cab3690d6
15754ac0ae0
hex4637231f4

18848297460 has 96 divisors (see below), whose sum is σ = 56000730240. Its totient is φ = 4720304128.

The previous prime is 18848297453. The next prime is 18848297551. The reversal of 18848297460 is 6479284881.

It is a self number, because there is not a number n which added to its sum of digits gives 18848297460.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 456556 + ... + 496124.

It is an arithmetic number, because the mean of its divisors is an integer number (583340940).

Almost surely, 218848297460 is an apocalyptic number.

18848297460 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 18848297460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28000365120).

18848297460 is an abundant number, since it is smaller than the sum of its proper divisors (37152432780).

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

18848297460 is a wasteful number, since it uses less digits than its factorization.

18848297460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40065 (or 40063 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 57.

The spelling of 18848297460 in words is "eighteen billion, eight hundred forty-eight million, two hundred ninety-seven thousand, four hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 17 20 30 34 51 60 68 85 102 170 204 255 340 467 510 934 1020 1401 1868 2335 2802 4670 5604 7005 7939 9340 14010 15878 23817 28020 31756 39569 39695 47634 79138 79390 95268 118707 119085 158276 158780 197845 237414 238170 395690 474828 476340 593535 672673 791380 1187070 1345346 2018019 2374140 2690692 3363365 4036038 6726730 8072076 10090095 13453460 18478723 20180190 36957446 40360380 55436169 73914892 92393615 110872338 184787230 221744676 277180845 314138291 369574460 554361690 628276582 942414873 1108723380 1256553164 1570691455 1884829746 3141382910 3769659492 4712074365 6282765820 9424148730 18848297460