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380727984 = 243713101863
BaseRepresentation
bin10110101100010…
…111001010110000
3222112101222121110
4112230113022300
51234431243414
6101440153320
712302064060
oct2654271260
9875358543
10380727984
11185a0262a
12a7608840
1360b54640
14387c93a0
1523658459
hex16b172b0

380727984 has 160 divisors (see below), whose sum is σ = 1223921664. Its totient is φ = 99302400.

The previous prime is 380727973. The next prime is 380727989. The reversal of 380727984 is 489727083.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (380727989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 440737 + ... + 441599.

Almost surely, 2380727984 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 380727984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (611960832).

380727984 is an abundant number, since it is smaller than the sum of its proper divisors (843193680).

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

380727984 is a wasteful number, since it uses less digits than its factorization.

380727984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995 (or 989 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 380727984 is about 19512.2521508923. The cubic root of 380727984 is about 724.7778845544. Note that the first 3 decimals are identical.

It can be divided in two parts, 38072 and 7984, that added together give a triangular number (46056 = T303).

The spelling of 380727984 in words is "three hundred eighty million, seven hundred twenty-seven thousand, nine hundred eighty-four".

Divisors: 1 2 3 4 6 7 8 12 13 14 16 21 24 26 28 39 42 48 52 56 78 84 91 101 104 112 156 168 182 202 208 273 303 312 336 364 404 546 606 624 707 728 808 863 1092 1212 1313 1414 1456 1616 1726 2121 2184 2424 2589 2626 2828 3452 3939 4242 4368 4848 5178 5252 5656 6041 6904 7878 8484 9191 10356 10504 11219 11312 12082 13808 15756 16968 18123 18382 20712 21008 22438 24164 27573 31512 33657 33936 36246 36764 41424 44876 48328 55146 63024 67314 72492 73528 78533 87163 89752 96656 110292 134628 144984 147056 157066 174326 179504 220584 235599 261489 269256 289968 314132 348652 441168 471198 522978 538512 610141 628264 697304 942396 1045956 1133119 1220282 1256528 1394608 1830423 1884792 2091912 2266238 2440564 3399357 3660846 3769584 4183824 4532476 4881128 6798714 7321692 7931833 9064952 9762256 13597428 14643384 15863666 18129904 23795499 27194856 29286768 31727332 47590998 54389712 63454664 95181996 126909328 190363992 380727984