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73285760 = 275432663
BaseRepresentation
bin1000101111001…
…00000010000000
312002220022011102
410113210002000
5122230121020
611134433532
71546630052
oct427440200
9162808142
1073285760
1138405749
12206628a8
131224c272
149a398d2
156679475
hex45e4080

73285760 has 64 divisors (see below), whose sum is σ = 179340480. Its totient is φ = 28621824.

The previous prime is 73285733. The next prime is 73285769. The reversal of 73285760 is 6758237.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73285769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26189 + ... + 28851.

It is an arithmetic number, because the mean of its divisors is an integer number (2802195).

Almost surely, 273285760 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 73285760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89670240).

73285760 is an abundant number, since it is smaller than the sum of its proper divisors (106054720).

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

73285760 is a wasteful number, since it uses less digits than its factorization.

73285760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725 (or 2713 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 73285760 is about 8560.7102509079. The cubic root of 73285760 is about 418.4785465760.

The spelling of 73285760 in words is "seventy-three million, two hundred eighty-five thousand, seven hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 43 64 80 86 128 160 172 215 320 344 430 640 688 860 1376 1720 2663 2752 3440 5326 5504 6880 10652 13315 13760 21304 26630 27520 42608 53260 85216 106520 114509 170432 213040 229018 340864 426080 458036 572545 852160 916072 1145090 1704320 1832144 2290180 3664288 4580360 7328576 9160720 14657152 18321440 36642880 73285760