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68385750 = 2353194799
BaseRepresentation
bin1000001001101…
…11101111010110
311202200100121120
410010313233112
5120001321000
610441424410
71460161236
oct404675726
9152610546
1068385750
1135669254
121aa9b106
1311224b54
149121cc6
15600c6a0
hex4137bd6

68385750 has 64 divisors (see below), whose sum is σ = 179712000. Its totient is φ = 17272800.

The previous prime is 68385749. The next prime is 68385763. The reversal of 68385750 is 5758386.

It is a super-2 number, since 2×683857502 = 9353221606125000, which contains 22 as substring.

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, 11851 + ... + 16649.

It is an arithmetic number, because the mean of its divisors is an integer number (2808000).

Almost surely, 268385750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68385750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89856000).

68385750 is an abundant number, since it is smaller than the sum of its proper divisors (111326250).

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

68385750 is a wasteful number, since it uses less digits than its factorization.

68385750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4838 (or 4828 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 68385750 is about 8269.5677033325. The cubic root of 68385750 is about 408.9358682970.

The spelling of 68385750 in words is "sixty-eight million, three hundred eighty-five thousand, seven hundred fifty".

Divisors: 1 2 3 5 6 10 15 19 25 30 38 50 57 75 95 114 125 150 190 250 285 375 475 570 750 950 1425 2375 2850 4750 4799 7125 9598 14250 14397 23995 28794 47990 71985 91181 119975 143970 182362 239950 273543 359925 455905 547086 599875 719850 911810 1199750 1367715 1799625 2279525 2735430 3599250 4559050 6838575 11397625 13677150 22795250 34192875 68385750