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68726160 = 24325531801
BaseRepresentation
bin1000001100010…
…10110110010000
311210022122120100
410012022312100
5120043214120
610453012400
71463106546
oct406126620
9153278510
1068726160
1135880a88
121b024100
1311313a89
1491add96
156078490
hex418ad90

68726160 has 120 divisors (see below), whose sum is σ = 235290744. Its totient is φ = 17971200.

The previous prime is 68726159. The next prime is 68726183. The reversal of 68726160 is 6162786.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3504384 + 65221776 = 1872^2 + 8076^2 .

It is a tau number, because it is divible by the number of its divisors (120).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37260 + ... + 39060.

Almost surely, 268726160 is an apocalyptic number.

68726160 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 68726160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117645372).

68726160 is an abundant number, since it is smaller than the sum of its proper divisors (166564584).

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

68726160 is a wasteful number, since it uses less digits than its factorization.

68726160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873 (or 1864 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 68726160 is about 8290.1242451486. The cubic root of 68726160 is about 409.6132780221.

It can be divided in two parts, 68726 and 160, that added together give a palindrome (68886).

The spelling of 68726160 in words is "sixty-eight million, seven hundred twenty-six thousand, one hundred sixty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 36 40 45 48 53 60 72 80 90 106 120 144 159 180 212 240 265 318 360 424 477 530 636 720 795 848 954 1060 1272 1590 1801 1908 2120 2385 2544 3180 3602 3816 4240 4770 5403 6360 7204 7632 9005 9540 10806 12720 14408 16209 18010 19080 21612 27015 28816 32418 36020 38160 43224 54030 64836 72040 81045 86448 95453 108060 129672 144080 162090 190906 216120 259344 286359 324180 381812 432240 477265 572718 648360 763624 859077 954530 1145436 1296720 1431795 1527248 1718154 1909060 2290872 2863590 3436308 3818120 4295385 4581744 5727180 6872616 7636240 8590770 11454360 13745232 17181540 22908720 34363080 68726160