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68773848 = 233111329691
BaseRepresentation
bin1000001100101…
…10011111011000
311210102001222120
410012112133120
5120101230343
610454021240
71463365563
oct406263730
9153361876
1068773848
11359038a0
121b047820
131132c6b0
1491c34da
156087683
hex41967d8

68773848 has 128 divisors (see below), whose sum is σ = 209260800. Its totient is φ = 18547200.

The previous prime is 68773843. The next prime is 68773867. The reversal of 68773848 is 84837786.

It is a Cunningham number, because it is equal to 82932-1.

It is a self number, because there is not a number n which added to its sum of digits gives 68773848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68773843) 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 31 ways as a sum of consecutive naturals, for example, 99183 + ... + 99873.

It is an arithmetic number, because the mean of its divisors is an integer number (1634850).

Almost surely, 268773848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68773848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104630400).

68773848 is an abundant number, since it is smaller than the sum of its proper divisors (140486952).

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

68773848 is a wasteful number, since it uses less digits than its factorization.

68773848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753 (or 749 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 51.

The square root of 68773848 is about 8292.9999397082. Note that the first 4 decimals coincide. The cubic root of 68773848 is about 409.7079975181.

It can be divided in two parts, 687738 and 48, that added together give a palindrome (687786).

The spelling of 68773848 in words is "sixty-eight million, seven hundred seventy-three thousand, eight hundred forty-eight".

Divisors: 1 2 3 4 6 8 11 12 13 22 24 26 29 33 39 44 52 58 66 78 87 88 104 116 132 143 156 174 232 264 286 312 319 348 377 429 572 638 691 696 754 858 957 1131 1144 1276 1382 1508 1716 1914 2073 2262 2552 2764 3016 3432 3828 4146 4147 4524 5528 7601 7656 8292 8294 8983 9048 12441 15202 16584 16588 17966 20039 22803 24882 26949 30404 33176 35932 40078 45606 49764 53898 60117 60808 71864 80156 91212 98813 99528 107796 120234 160312 182424 197626 215592 220429 240468 260507 296439 395252 440858 480936 521014 592878 661287 781521 790504 881716 1042028 1185756 1322574 1563042 1763432 2084056 2371512 2645148 2865577 3126084 5290296 5731154 6252168 8596731 11462308 17193462 22924616 34386924 68773848