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285165142680 = 2335111911370221
BaseRepresentation
bin1000010011001010010…
…10101100001010011000
31000021001122112012020010
410021211022230022120
514133004234031210
6335000354401520
726413441501425
oct4114512541230
91007048465203
10285165142680
11aaa3531a440
12473252902a0
1320b77584022
14db32c28d4c
15764011a920
hex42652ac298

285165142680 has 128 divisors (see below), whose sum is σ = 982387180800. Its totient is φ = 65492467200.

The previous prime is 285165142673. The next prime is 285165142687. The reversal of 285165142680 is 86241561582.

It is an interprime number because it is at equal distance from previous prime (285165142673) and next prime (285165142687).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285165142687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5660031 + ... + 5710190.

It is an arithmetic number, because the mean of its divisors is an integer number (7674899850).

Almost surely, 2285165142680 is an apocalyptic number.

285165142680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285165142680 is an abundant number, since it is smaller than the sum of its proper divisors (697222038120).

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

285165142680 is a wasteful number, since it uses less digits than its factorization.

285165142680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11370265 (or 11370261 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 48.

The spelling of 285165142680 in words is "two hundred eighty-five billion, one hundred sixty-five million, one hundred forty-two thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 11 12 15 19 20 22 24 30 33 38 40 44 55 57 60 66 76 88 95 110 114 120 132 152 165 190 209 220 228 264 285 330 380 418 440 456 570 627 660 760 836 1045 1140 1254 1320 1672 2090 2280 2508 3135 4180 5016 6270 8360 12540 25080 11370221 22740442 34110663 45480884 56851105 68221326 90961768 113702210 125072431 136442652 170553315 216034199 227404420 250144862 272885304 341106630 375217293 432068398 454808840 500289724 625362155 648102597 682213260 750434586 864136796 1000579448 1080170995 1250724310 1296205194 1364426520 1500869172 1728273592 1876086465 2160341990 2376376189 2501448620 2592410388 3001738344 3240512985 3752172930 4320683980 4752752378 5002897240 5184820776 6481025970 7129128567 7504345860 8641367960 9505504756 11881880945 12962051940 14258257134 15008691720 19011009512 23763761890 25924103880 28516514268 35645642835 47527523780 57033028536 71291285670 95055047560 142582571340 285165142680