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68325320 = 23572391021
BaseRepresentation
bin1000001001010…
…00111111001000
311202120021201102
410010220333020
5114442402240
610440240532
71456520120
oct404507710
9152507642
1068325320
1135627908
121aa70148
13112034ab
149107c80
155ee9815
hex4128fc8

68325320 has 64 divisors (see below), whose sum is σ = 176601600. Its totient is φ = 23304960.

The previous prime is 68325317. The next prime is 68325331. The reversal of 68325320 is 2352386.

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 15 ways as a sum of consecutive naturals, for example, 66410 + ... + 67430.

It is an arithmetic number, because the mean of its divisors is an integer number (2759400).

Almost surely, 268325320 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 68325320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88300800).

68325320 is an abundant number, since it is smaller than the sum of its proper divisors (108276280).

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

68325320 is a wasteful number, since it uses less digits than its factorization.

68325320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278 (or 1274 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 68325320 is about 8265.9131376999. The cubic root of 68325320 is about 408.8153788815.

The spelling of 68325320 in words is "sixty-eight million, three hundred twenty-five thousand, three hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 239 280 478 956 1021 1195 1673 1912 2042 2390 3346 4084 4780 5105 6692 7147 8168 8365 9560 10210 13384 14294 16730 20420 28588 33460 35735 40840 57176 66920 71470 142940 244019 285880 488038 976076 1220095 1708133 1952152 2440190 3416266 4880380 6832532 8540665 9760760 13665064 17081330 34162660 68325320