Search a number
-
+
255018530 = 251317257449
BaseRepresentation
bin11110011001101…
…00011000100010
3122202212021122202
433030310120202
51010241043110
641145533202
76214423154
oct1714643042
9582767582
10255018530
11120a51218
12714a4202
1340aaba50
1425c24ad4
15175c60a5
hexf334622

255018530 has 64 divisors (see below), whose sum is σ = 526629600. Its totient is φ = 88080384.

The previous prime is 255018527. The next prime is 255018571. The reversal of 255018530 is 35810552.

It can be written as a sum of positive squares in 16 ways, for example, as 95981209 + 159037321 = 9797^2 + 12611^2 .

It is a junction number, because it is equal to n+sod(n) for n = 255018493 and 255018502.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 567746 + ... + 568194.

Almost surely, 2255018530 is an apocalyptic number.

255018530 is an abundant number, since it is smaller than the sum of its proper divisors (271611070).

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

255018530 is a wasteful number, since it uses less digits than its factorization.

255018530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 255018530 is about 15969.2996089371. The cubic root of 255018530 is about 634.1479302665.

The spelling of 255018530 in words is "two hundred fifty-five million, eighteen thousand, five hundred thirty".

Divisors: 1 2 5 10 13 17 26 34 65 85 130 170 221 257 442 449 514 898 1105 1285 2210 2245 2570 3341 4369 4490 5837 6682 7633 8738 11674 15266 16705 21845 29185 33410 38165 43690 56797 58370 76330 99229 113594 115393 198458 230786 283985 496145 567970 576965 992290 1153930 1500109 1961681 3000218 3923362 7500545 9808405 15001090 19616810 25501853 51003706 127509265 255018530