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215043050260 = 225433138117981
BaseRepresentation
bin1100100001000110010…
…0001000101100010100
3202120001201102211001001
43020101210020230110
512010402010102020
6242442302513044
721351652524253
oct3102144105424
9676051384031
10215043050260
1183221217545
1235815595784
1317380a5c24c
14a59dd1079a
1558d8e3e50a
hex3211908b14

215043050260 has 48 divisors (see below), whose sum is σ = 452986288272. Its totient is φ = 85751654400.

The previous prime is 215043050239. The next prime is 215043050273. The reversal of 215043050260 is 62050340512.

It can be written as a sum of positive squares in 8 ways, for example, as 338707216 + 214704343044 = 18404^2 + 463362^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11950470 + ... + 11968450.

It is an arithmetic number, because the mean of its divisors is an integer number (9437214339).

Almost surely, 2215043050260 is an apocalyptic number.

215043050260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215043050260 is an abundant number, since it is smaller than the sum of its proper divisors (237943238012).

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

215043050260 is a wasteful number, since it uses less digits than its factorization.

215043050260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19804 (or 19802 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 215043050260 its reverse (62050340512), we get a palindrome (277093390772).

The spelling of 215043050260 in words is "two hundred fifteen billion, forty-three million, fifty thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 433 866 1381 1732 2165 2762 4330 5524 6905 8660 13810 17981 27620 35962 71924 89905 179810 359620 597973 1195946 2391892 2989865 5979730 7785773 11959460 15571546 24831761 31143092 38928865 49663522 77857730 99327044 124158805 155715460 248317610 496635220 10752152513 21504305026 43008610052 53760762565 107521525130 215043050260