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68748150 = 23522319927
BaseRepresentation
bin1000001100100…
…00001101110110
311210100202201210
410012100031312
5120044420100
610453302250
71463230632
oct406201566
9153322653
1068748150
1135896559
121b034986
1311320aa3
1491b7dc2
15607ec50
hex4190376

68748150 has 48 divisors (see below), whose sum is σ = 177917184. Its totient is φ = 17534880.

The previous prime is 68748133. The next prime is 68748151. The reversal of 68748150 is 5184786.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68748099 and 68748108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68748151) 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 23 ways as a sum of consecutive naturals, for example, 6514 + ... + 13413.

It is an arithmetic number, because the mean of its divisors is an integer number (3706608).

Almost surely, 268748150 is an apocalyptic number.

68748150 is an abundant number, since it is smaller than the sum of its proper divisors (109169034).

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

68748150 is a wasteful number, since it uses less digits than its factorization.

68748150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19965 (or 19960 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 68748150 is about 8291.4504159405. The cubic root of 68748150 is about 409.6569607356.

The spelling of 68748150 in words is "sixty-eight million, seven hundred forty-eight thousand, one hundred fifty".

Divisors: 1 2 3 5 6 10 15 23 25 30 46 50 69 75 115 138 150 230 345 575 690 1150 1725 3450 19927 39854 59781 99635 119562 199270 298905 458321 498175 597810 916642 996350 1374963 1494525 2291605 2749926 2989050 4583210 6874815 11458025 13749630 22916050 34374075 68748150