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68324580 = 22335294363
BaseRepresentation
bin1000001001010…
…00110011100100
311202120020201000
410010220303210
5114442341310
610440233300
71456515012
oct404506344
9152506630
1068324580
11356272a5
121aa6b830
131120305c
1491078b2
155ee94c0
hex4128ce4

68324580 has 96 divisors (see below), whose sum is σ = 219945600. Its totient is φ = 17587584.

The previous prime is 68324567. The next prime is 68324593. The reversal of 68324580 is 8542386.

It is an interprime number because it is at equal distance from previous prime (68324567) and next prime (68324593).

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

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, 13479 + ... + 17841.

It is an arithmetic number, because the mean of its divisors is an integer number (2291100).

Almost surely, 268324580 is an apocalyptic number.

68324580 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 68324580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109972800).

68324580 is an abundant number, since it is smaller than the sum of its proper divisors (151621020).

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

68324580 is a wasteful number, since it uses less digits than its factorization.

68324580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4410 (or 4402 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 68324580 is about 8265.8683754340. The cubic root of 68324580 is about 408.8139029793.

The spelling of 68324580 in words is "sixty-eight million, three hundred twenty-four thousand, five hundred eighty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 27 29 30 36 45 54 58 60 87 90 108 116 135 145 174 180 261 270 290 348 435 522 540 580 783 870 1044 1305 1566 1740 2610 3132 3915 4363 5220 7830 8726 13089 15660 17452 21815 26178 39267 43630 52356 65445 78534 87260 117801 126527 130890 157068 196335 235602 253054 261780 379581 392670 471204 506108 589005 632635 759162 785340 1138743 1178010 1265270 1518324 1897905 2277486 2356020 2530540 3416229 3795810 4554972 5693715 6832458 7591620 11387430 13664916 17081145 22774860 34162290 68324580