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252587700680 = 235717307172849
BaseRepresentation
bin1110101100111101100…
…1100111000111001000
3220010222021022200010012
43223033121213013020
513114244422410210
6312012011011052
724151234013420
oct3531731470710
9803867280105
10252587700680
1198138199057
1240b53139a88
131aa85216823
14c322371480
1568850ba305
hex3acf6671c8

252587700680 has 128 divisors (see below), whose sum is σ = 689961888000. Its totient is φ = 81241325568.

The previous prime is 252587700641. The next prime is 252587700683. The reversal of 252587700680 is 86007785252.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (252587700683) 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, 1374896 + ... + 1547744.

It is an arithmetic number, because the mean of its divisors is an integer number (5390327250).

Almost surely, 2252587700680 is an apocalyptic number.

252587700680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252587700680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344980944000).

252587700680 is an abundant number, since it is smaller than the sum of its proper divisors (437374187320).

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

252587700680 is a wasteful number, since it uses less digits than its factorization.

252587700680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173191 (or 173187 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 50.

The spelling of 252587700680 in words is "two hundred fifty-two billion, five hundred eighty-seven million, seven hundred thousand, six hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 17 20 28 34 35 40 56 68 70 85 119 136 140 170 238 280 307 340 476 595 614 680 952 1190 1228 1535 2149 2380 2456 3070 4298 4760 5219 6140 8596 10438 10745 12280 17192 20876 21490 26095 36533 41752 42980 52190 73066 85960 104380 146132 172849 182665 208760 292264 345698 365330 691396 730660 864245 1209943 1382792 1461320 1728490 2419886 2938433 3456980 4839772 5876866 6049715 6913960 9679544 11753732 12099430 14692165 20569031 23507464 24198860 29384330 41138062 48397720 53064643 58768660 82276124 102845155 106129286 117537320 164552248 205690310 212258572 265323215 371452501 411380620 424517144 530646430 742905002 822761240 902098931 1061292860 1485810004 1804197862 1857262505 2122585720 2971620008 3608395724 3714525010 4510494655 6314692517 7216791448 7429050020 9020989310 12629385034 14858100040 18041978620 25258770068 31573462585 36083957240 50517540136 63146925170 126293850340 252587700680