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68892120 = 23345111933
BaseRepresentation
bin1000001101100…
…11010111011000
311210122002020000
410012303113120
5120114021440
610500333000
71464400443
oct406632730
9153562200
1068892120
1135984740
121b0a4160
131137148b
14921465a
1560ac730
hex41b35d8

68892120 has 160 divisors (see below), whose sum is σ = 252735120. Its totient is φ = 16692480.

The previous prime is 68892097. The next prime is 68892121. The reversal of 68892120 is 2129886.

It is a super-2 number, since 2×688921202 = 9492248396188800, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68892121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 34674 + ... + 36606.

Almost surely, 268892120 is an apocalyptic number.

68892120 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 68892120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126367560).

68892120 is an abundant number, since it is smaller than the sum of its proper divisors (183843000).

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

68892120 is a wasteful number, since it uses less digits than its factorization.

68892120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967 (or 1954 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 68892120 is about 8300.1277098609. The cubic root of 68892120 is about 409.9427244997.

It can be divided in two parts, 6889 and 2120, that added together give a palindrome (9009).

The spelling of 68892120 in words is "sixty-eight million, eight hundred ninety-two thousand, one hundred twenty".

Divisors: 1 2 3 4 5 6 8 9 10 11 12 15 18 20 22 24 27 30 33 36 40 44 45 54 55 60 66 72 81 88 90 99 108 110 120 132 135 162 165 180 198 216 220 264 270 297 324 330 360 396 405 440 495 540 594 648 660 792 810 891 990 1080 1188 1320 1485 1620 1782 1933 1980 2376 2970 3240 3564 3866 3960 4455 5799 5940 7128 7732 8910 9665 11598 11880 15464 17397 17820 19330 21263 23196 28995 34794 35640 38660 42526 46392 52191 57990 63789 69588 77320 85052 86985 104382 106315 115980 127578 139176 156573 170104 173970 191367 208764 212630 231960 255156 260955 313146 318945 347940 382734 417528 425260 510312 521910 574101 626292 637890 695880 765468 782865 850520 956835 1043820 1148202 1252584 1275780 1530936 1565730 1722303 1913670 2087640 2296404 2551560 2870505 3131460 3444606 3827340 4592808 5741010 6262920 6889212 7654680 8611515 11482020 13778424 17223030 22964040 34446060 68892120