Search a number
-
+
87501051968 = 26111761311927
BaseRepresentation
bin101000101111101111…
…0000001100001000000
322100212002122222212112
41101133132001201000
52413200232130333
6104110351114452
76215233445531
oct1213736014100
9270762588775
1087501051968
1134122076490
1214b5bb12a28
1383361a08c5
144341082688
152421cac948
hex145f781840

87501051968 has 112 divisors (see below), whose sum is σ = 200906262144. Its totient is φ = 37369405440.

The previous prime is 87501051941. The next prime is 87501052003. The reversal of 87501051968 is 86915010578.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7330421 + ... + 7342347.

It is an arithmetic number, because the mean of its divisors is an integer number (1793805912).

Almost surely, 287501051968 is an apocalyptic number.

87501051968 is a gapful number since it is divisible by the number (88) 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 87501051968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100453131072).

87501051968 is an abundant number, since it is smaller than the sum of its proper divisors (113405210176).

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

87501051968 is a wasteful number, since it uses less digits than its factorization.

87501051968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12580 (or 12570 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 50.

The spelling of 87501051968 in words is "eighty-seven billion, five hundred one million, fifty-one thousand, nine hundred sixty-eight".

Divisors: 1 2 4 8 11 16 17 22 32 34 44 64 68 88 136 176 187 272 352 374 544 613 704 748 1088 1226 1496 2452 2992 4904 5984 6743 9808 10421 11927 11968 13486 19616 20842 23854 26972 39232 41684 47708 53944 83368 95416 107888 114631 131197 166736 190832 202759 215776 229262 262394 333472 381664 405518 431552 458524 524788 666944 763328 811036 917048 1049576 1622072 1834096 2099152 2230349 3244144 3668192 4198304 4460698 6488288 7311251 7336384 8396608 8921396 12976576 14622502 17842792 29245004 35685584 58490008 71371168 80423761 116980016 124291267 142742336 160847522 233960032 248582534 321695044 467920064 497165068 643390088 994330136 1286780176 1367203937 1988660272 2573560352 2734407874 3977320544 5147120704 5468815748 7954641088 10937631496 21875262992 43750525984 87501051968