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68470380 = 223351111527
BaseRepresentation
bin1000001010011…
…00011001101100
311202211122201000
410011030121230
5120012023010
610443320300
71460663046
oct405143154
9152748630
1068470380
11357168a0
121ab20090
1311254524
149144a96
1560277c0
hex414c66c

68470380 has 96 divisors (see below), whose sum is σ = 232404480. Its totient is φ = 16597440.

The previous prime is 68470361. The next prime is 68470403. The reversal of 68470380 is 8307486.

68470380 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

68470380 is strictly pandigital in base 9.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 177 + ... + 11703.

It is an arithmetic number, because the mean of its divisors is an integer number (2420880).

Almost surely, 268470380 is an apocalyptic number.

68470380 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 68470380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116202240).

68470380 is an abundant number, since it is smaller than the sum of its proper divisors (163934100).

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

68470380 is a wasteful number, since it uses less digits than its factorization.

68470380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11556 (or 11548 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 68470380 is about 8274.6830755020. The cubic root of 68470380 is about 409.1044900542.

The spelling of 68470380 in words is "sixty-eight million, four hundred seventy thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 9 10 11 12 15 18 20 22 27 30 33 36 44 45 54 55 60 66 90 99 108 110 132 135 165 180 198 220 270 297 330 396 495 540 594 660 990 1188 1485 1980 2970 5940 11527 23054 34581 46108 57635 69162 103743 115270 126797 138324 172905 207486 230540 253594 311229 345810 380391 414972 507188 518715 622458 633985 691620 760782 1037430 1141173 1244916 1267970 1521564 1556145 1901955 2074860 2282346 2535940 3112290 3423519 3803910 4564692 5705865 6224580 6847038 7607820 11411730 13694076 17117595 22823460 34235190 68470380