Search a number
-
+
1280969200480 = 255174710020097
BaseRepresentation
bin10010101000111111101…
…101101101001101100000
311112110101221112200002111
4102220333231231031200
5131441411103403410
62420245155325104
7161355416360014
oct22507755551540
94473357480074
101280969200480
1145428a79a902
12188315bb0794
1393a44464b18
1445ddbcb4544
15234c3304b8a
hex12a3fb6d360

1280969200480 has 96 divisors (see below), whose sum is σ = 3272483846016. Its totient is φ = 471986601984.

The previous prime is 1280969200453. The next prime is 1280969200487. The reversal of 1280969200480 is 840029690821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280969200487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4882209 + ... + 5137888.

It is an arithmetic number, because the mean of its divisors is an integer number (34088373396).

Almost surely, 21280969200480 is an apocalyptic number.

1280969200480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1280969200480 is an abundant number, since it is smaller than the sum of its proper divisors (1991514645536).

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

1280969200480 is a wasteful number, since it uses less digits than its factorization.

1280969200480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10020176 (or 10020168 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 49.

The spelling of 1280969200480 in words is "one trillion, two hundred eighty billion, nine hundred sixty-nine million, two hundred thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 17 20 32 34 40 47 68 80 85 94 136 160 170 188 235 272 340 376 470 544 680 752 799 940 1360 1504 1598 1880 2720 3196 3760 3995 6392 7520 7990 12784 15980 25568 31960 63920 127840 10020097 20040194 40080388 50100485 80160776 100200970 160321552 170341649 200401940 320643104 340683298 400803880 470944559 681366596 801607760 851708245 941889118 1362733192 1603215520 1703416490 1883778236 2354722795 2725466384 3406832980 3767556472 4709445590 5450932768 6813665960 7535112944 8006057503 9418891180 13627331920 15070225888 16012115006 18837782360 27254663840 32024230012 37675564720 40030287515 64048460024 75351129440 80060575030 128096920048 160121150060 256193840096 320242300120 640484600240 1280969200480