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1968131760 = 243578913163
BaseRepresentation
bin111010101001111…
…0100111010110000
312002011101110012220
41311103310322300
513012320204020
6523143521040
766525562320
oct16523647260
95064343186
101968131760
1191aa60581
1246b159180
13254999c0a
14149561280
15b7bba240
hex754f4eb0

1968131760 has 160 divisors (see below), whose sum is σ = 7051691520. Its totient is φ = 444770304.

The previous prime is 1968131743. The next prime is 1968131771. The reversal of 1968131760 is 671318691.

1968131760 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×19681317604 (a number of 38 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 142939 + ... + 156101.

It is an arithmetic number, because the mean of its divisors is an integer number (44073072).

Almost surely, 21968131760 is an apocalyptic number.

1968131760 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 1968131760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3525845760).

1968131760 is an abundant number, since it is smaller than the sum of its proper divisors (5083559760).

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

1968131760 is a wasteful number, since it uses less digits than its factorization.

1968131760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13275 (or 13269 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 1968131760 is about 44363.6310506703. The cubic root of 1968131760 is about 1253.1932775695.

The spelling of 1968131760 in words is "one billion, nine hundred sixty-eight million, one hundred thirty-one thousand, seven hundred sixty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 40 42 48 56 60 70 80 84 89 105 112 120 140 168 178 210 240 267 280 336 356 420 445 534 560 623 712 840 890 1068 1246 1335 1424 1680 1780 1869 2136 2492 2670 3115 3560 3738 4272 4984 5340 6230 7120 7476 9345 9968 10680 12460 13163 14952 18690 21360 24920 26326 29904 37380 39489 49840 52652 65815 74760 78978 92141 105304 131630 149520 157956 184282 197445 210608 263260 276423 315912 368564 394890 460705 526520 552846 631824 737128 789780 921410 1053040 1105692 1171507 1382115 1474256 1579560 1842820 2211384 2343014 2764230 3159120 3514521 3685640 4422768 4686028 5528460 5857535 7029042 7371280 8200549 9372056 11056920 11715070 14058084 16401098 17572605 18744112 22113840 23430140 24601647 28116168 32802196 35145210 41002745 46860280 49203294 56232336 65604392 70290420 82005490 93720560 98406588 123008235 131208784 140580840 164010980 196813176 246016470 281161680 328021960 393626352 492032940 656043920 984065880 1968131760