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68883984 = 243213311187
BaseRepresentation
bin1000001101100…
…01011000010000
311210121200001200
410012301120100
5120113241414
610500231200
71464334641
oct406613020
9153550050
1068883984
1135979614
121b09b500
131136a870
1492116c8
1560aa109
hex41b1610

68883984 has 120 divisors (see below), whose sum is σ = 214486272. Its totient is φ = 20494080.

The previous prime is 68883943. The next prime is 68884001. The reversal of 68883984 is 48938886.

68883984 is nontrivially palindromic in base 7.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 68883984.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57439 + ... + 58625.

Almost surely, 268883984 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 68883984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107243136).

68883984 is an abundant number, since it is smaller than the sum of its proper divisors (145602288).

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

68883984 is a wasteful number, since it uses less digits than its factorization.

68883984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245 (or 1236 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The square root of 68883984 is about 8299.6375824490. The cubic root of 68883984 is about 409.9265861019.

The spelling of 68883984 in words is "sixty-eight million, eight hundred eighty-three thousand, nine hundred eighty-four".

Divisors: 1 2 3 4 6 8 9 12 13 16 18 24 26 31 36 39 48 52 62 72 78 93 104 117 124 144 156 186 208 234 248 279 312 372 403 468 496 558 624 744 806 936 1116 1187 1209 1488 1612 1872 2232 2374 2418 3224 3561 3627 4464 4748 4836 6448 7122 7254 9496 9672 10683 14244 14508 15431 18992 19344 21366 28488 29016 30862 36797 42732 46293 56976 58032 61724 73594 85464 92586 110391 123448 138879 147188 170928 185172 220782 246896 277758 294376 331173 370344 441564 478361 555516 588752 662346 740688 883128 956722 1111032 1324692 1435083 1766256 1913444 2222064 2649384 2870166 3826888 4305249 5298768 5740332 7653776 8610498 11480664 17220996 22961328 34441992 68883984