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305801307 = 3273235973
BaseRepresentation
bin10010001110100…
…010100001011011
3210022102022112100
4102032202201123
51111241120212
650202214443
710402161000
oct2216424133
9708368470
10305801307
11147687059
12864b4423
134b47c526
142c8838a7
151bca7bdc
hex123a285b

305801307 has 96 divisors (see below), whose sum is σ = 554112000. Its totient is φ = 162062208.

The previous prime is 305801297. The next prime is 305801383. The reversal of 305801307 is 703108503.

It is not a de Polignac number, because 305801307 - 214 = 305784923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (305801207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4189023 + ... + 4189095.

It is an arithmetic number, because the mean of its divisors is an integer number (5772000).

Almost surely, 2305801307 is an apocalyptic number.

305801307 is a deficient number, since it is larger than the sum of its proper divisors (248310693).

305801307 is a wasteful number, since it uses less digits than its factorization.

305801307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 305801307 is about 17487.1755009207. The cubic root of 305801307 is about 673.7205260621.

The spelling of 305801307 in words is "three hundred five million, eight hundred one thousand, three hundred seven".

Divisors: 1 3 7 9 21 23 49 59 63 69 73 147 161 177 207 219 343 413 441 483 511 531 657 1029 1127 1239 1357 1449 1533 1679 2891 3087 3381 3577 3717 4071 4307 4599 5037 7889 8673 9499 10143 10731 11753 12213 12921 15111 20237 23667 25039 26019 28497 30149 32193 35259 38763 60711 66493 71001 75117 82271 85491 90447 99061 105777 182133 199479 211043 225351 246813 271341 297183 465451 575897 598437 633129 693427 740439 891549 1396353 1477301 1727691 1899387 2080281 4189059 4431903 4853989 5183073 6240843 13295709 14561967 33977923 43685901 101933769 305801307