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286280642704 = 24729721972
BaseRepresentation
bin1000010101001111010…
…01111111000010010000
31000100221101112110120211
410022213221333002100
514142300321031304
6335303203413504
726453205212200
oct4124751770220
91010841473524
10286280642704
11100457a61091
1247596984294
1320cc4700b04
14dbdb040400
1576a8014204
hex42a7a7f090

286280642704 has 135 divisors (see below), whose sum is σ = 655273483083. Its totient is φ = 120810461184.

The previous prime is 286280642677. The next prime is 286280642707. The reversal of 286280642704 is 407246082682.

It is a happy number.

The square root of 286280642704 is 535052.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 89073596304 + 197207046400 = 298452^2 + 444080^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (286280642707) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1453201134 + ... + 1453201330.

Almost surely, 2286280642704 is an apocalyptic number.

286280642704 is the 535052-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 286280642704

286280642704 is an abundant number, since it is smaller than the sum of its proper divisors (368992840379).

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

286280642704 is an frugal number, since it uses more digits than its factorization.

286280642704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 49.

Multiplying 286280642704 by its sum of digits (49), we get a square (14027751492496 = 37453642).

286280642704 divided by its sum of digits (49) gives a square (5842462096 = 764362).

The spelling of 286280642704 in words is "two hundred eighty-six billion, two hundred eighty million, six hundred forty-two thousand, seven hundred four".

Divisors: 1 2 4 7 8 14 16 28 49 56 97 98 112 194 196 197 388 392 394 679 776 784 788 1358 1379 1552 1576 2716 2758 3152 4753 5432 5516 9409 9506 9653 10864 11032 18818 19012 19109 19306 22064 37636 38024 38218 38612 38809 65863 75272 76048 76436 77224 77618 131726 133763 150544 152872 154448 155236 263452 267526 271663 305744 310472 461041 526904 535052 543326 620944 922082 936341 1053808 1070104 1086652 1844164 1853573 1872682 1901641 2140208 2173304 3688328 3707146 3745364 3764473 3803282 4346608 7376656 7414292 7490728 7528946 7606564 12975011 14828584 14981456 15057892 15213128 25950022 26351311 29657168 30115784 30426256 51900044 52702622 60231568 90825077 103800088 105405244 181650154 184459177 207600176 210810488 363300308 365153881 368918354 421620976 726600616 730307762 737836708 1453201232 1460615524 1475673416 2556077167 2921231048 2951346832 5112154334 5842462096 10224308668 17892540169 20448617336 35785080338 40897234672 71570160676 143140321352 286280642704