Search a number
-
+
12708642852 = 223331721171
BaseRepresentation
bin10111101010111111…
…01000000000100100
31012210200112221121000
423311133220000210
5202011403032402
65501022153300
7626634452613
oct136537500044
935720487530
1012708642852
115431774524
122568122830
131276c0bb19
14887ba587a
154e5a9dc1c
hex2f57e8024

12708642852 has 72 divisors (see below), whose sum is σ = 33080825120. Its totient is φ = 4219244640.

The previous prime is 12708642809. The next prime is 12708642901. The reversal of 12708642852 is 25824680721.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12708642798 and 12708642807.

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, 10852227 + ... + 10853397.

Almost surely, 212708642852 is an apocalyptic number.

12708642852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12708642852 is an abundant number, since it is smaller than the sum of its proper divisors (20372182268).

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

12708642852 is a wasteful number, since it uses less digits than its factorization.

12708642852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818 (or 1493 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 12708642852 in words is "twelve billion, seven hundred eight million, six hundred forty-two thousand, eight hundred fifty-two".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 108 317 634 951 1171 1268 1902 2342 2853 3513 3804 4684 5706 7026 8559 10539 11412 14052 17118 21078 31617 34236 42156 63234 100489 126468 200978 301467 371207 401956 602934 742414 904401 1113621 1205868 1484828 1808802 2227242 2713203 3340863 3617604 4454484 5426406 6681726 10022589 10852812 13363452 20045178 40090356 117672619 235345238 353017857 470690476 706035714 1059053571 1412071428 2118107142 3177160713 4236214284 6354321426 12708642852