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68332860 = 2232517137163
BaseRepresentation
bin1000001001010…
…10110100111100
311202120200001200
410010222310330
5114443122420
610440335500
71456551111
oct404526474
9152520050
1068332860
1135632542
121aa74590
1311206a5b
14910a908
155eebb90
hex412ad3c

68332860 has 144 divisors (see below), whose sum is σ = 222427296. Its totient is φ = 16920576.

The previous prime is 68332813. The next prime is 68332879. The reversal of 68332860 is 6823386.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 419139 + ... + 419301.

It is an arithmetic number, because the mean of its divisors is an integer number (1544634).

Almost surely, 268332860 is an apocalyptic number.

68332860 is a gapful number since it is divisible by the number (60) 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 68332860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111213648).

68332860 is an abundant number, since it is smaller than the sum of its proper divisors (154094436).

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

68332860 is a wasteful number, since it uses less digits than its factorization.

68332860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 68332860 is about 8266.3692150786. The cubic root of 68332860 is about 408.8304165210.

The spelling of 68332860 in words is "sixty-eight million, three hundred thirty-two thousand, eight hundred sixty".

Divisors: 1 2 3 4 5 6 9 10 12 15 17 18 20 30 34 36 45 51 60 68 85 90 102 137 153 163 170 180 204 255 274 306 326 340 411 489 510 548 612 652 685 765 815 822 978 1020 1233 1370 1467 1530 1630 1644 1956 2055 2329 2445 2466 2740 2771 2934 3060 3260 4110 4658 4890 4932 5542 5868 6165 6987 7335 8220 8313 9316 9780 11084 11645 12330 13855 13974 14670 16626 20961 22331 23290 24660 24939 27710 27948 29340 33252 34935 41565 41922 44662 46580 49878 55420 66993 69870 83130 83844 89324 99756 104805 111655 124695 133986 139740 166260 200979 209610 223310 249390 267972 334965 379627 401958 419220 446620 498780 669930 759254 803916 1004895 1138881 1339860 1518508 1898135 2009790 2277762 3416643 3796270 4019580 4555524 5694405 6833286 7592540 11388810 13666572 17083215 22777620 34166430 68332860