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68012560 = 24571161181
BaseRepresentation
bin1000000110111…
…00101000010000
311201222101200201
410003130220100
5114402400220
610425424544
71454045230
oct403345020
9151871621
1068012560
1135433930
121a93b154
1311124025
149065cc0
155e86d0a
hex40dca10

68012560 has 160 divisors (see below), whose sum is σ = 201487104. Its totient is φ = 20736000.

The previous prime is 68012551. The next prime is 68012573. The reversal of 68012560 is 6521086.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 375670 + ... + 375850.

Almost surely, 268012560 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 68012560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100743552).

68012560 is an abundant number, since it is smaller than the sum of its proper divisors (133474544).

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

68012560 is a wasteful number, since it uses less digits than its factorization.

68012560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 68012560 is about 8246.9727779349. The cubic root of 68012560 is about 408.1906388349.

The spelling of 68012560 in words is "sixty-eight million, twelve thousand, five hundred sixty".

Divisors: 1 2 4 5 7 8 10 11 14 16 20 22 28 35 40 44 55 56 61 70 77 80 88 110 112 122 140 154 176 181 220 244 280 305 308 362 385 427 440 488 560 610 616 671 724 770 854 880 905 976 1220 1232 1267 1342 1448 1540 1708 1810 1991 2135 2440 2534 2684 2896 3080 3355 3416 3620 3982 4270 4697 4880 5068 5368 6160 6335 6710 6832 7240 7964 8540 9394 9955 10136 10736 11041 12670 13420 13937 14480 15928 17080 18788 19910 20272 22082 23485 25340 26840 27874 31856 34160 37576 39820 44164 46970 50680 53680 55205 55748 69685 75152 77287 79640 88328 93940 101360 110410 111496 121451 139370 154574 159280 176656 187880 220820 222992 242902 278740 309148 375760 386435 441640 485804 557480 607255 618296 772870 850157 883280 971608 1114960 1214510 1236592 1545740 1700314 1943216 2429020 3091480 3400628 4250785 4858040 6182960 6801256 8501570 9716080 13602512 17003140 34006280 68012560