Search a number
-
+
68541760 = 265737827
BaseRepresentation
bin1000001010111…
…01110101000000
311202222021121201
410011131311000
5120021314020
610445030544
71461411130
oct405356500
9152867551
1068541760
1135765491
121ab55454
131127ab71
149162ac0
15603da0a
hex415dd40

68541760 has 112 divisors (see below), whose sum is σ = 191804544. Its totient is φ = 22837248.

The previous prime is 68541757. The next prime is 68541763. The reversal of 68541760 is 6714586.

It is an interprime number because it is at equal distance from previous prime (68541757) and next prime (68541763).

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68541763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82467 + ... + 83293.

Almost surely, 268541760 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 68541760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95902272).

68541760 is an abundant number, since it is smaller than the sum of its proper divisors (123262784).

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

68541760 is a wasteful number, since it uses less digits than its factorization.

68541760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888 (or 878 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 68541760 is about 8278.9951081034. The cubic root of 68541760 is about 409.2466037525.

The spelling of 68541760 in words is "sixty-eight million, five hundred forty-one thousand, seven hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 37 40 56 64 70 74 80 112 140 148 160 185 224 259 280 296 320 370 448 518 560 592 740 827 1036 1120 1184 1295 1480 1654 2072 2240 2368 2590 2960 3308 4135 4144 5180 5789 5920 6616 8270 8288 10360 11578 11840 13232 16540 16576 20720 23156 26464 28945 30599 33080 41440 46312 52928 57890 61198 66160 82880 92624 115780 122396 132320 152995 185248 214193 231560 244792 264640 305990 370496 428386 463120 489584 611980 856772 926240 979168 1070965 1223960 1713544 1852480 1958336 2141930 2447920 3427088 4283860 4895840 6854176 8567720 9791680 13708352 17135440 34270880 68541760