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215330568484 = 22641797105373
BaseRepresentation
bin1100100010001010110…
…0111011100100100100
3202120210202110020220011
43020202230323210210
512011444111142414
6242531013220004
721362043426643
oct3104254734444
9676722406804
10215330568484
1183359546209
1235895931604
13173c84a9985
14a5ca19535a
1559042d4dc4
hex3222b3b924

215330568484 has 24 divisors (see below), whose sum is σ = 377893503288. Its totient is φ = 107361423360.

The previous prime is 215330568443. The next prime is 215330568511. The reversal of 215330568484 is 484865033512.

It can be written as a sum of positive squares in 4 ways, for example, as 26689756900 + 188640811584 = 163370^2 + 434328^2 .

It is a super-2 number, since 2×2153305684842 (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1990822 + ... + 2096194.

It is an arithmetic number, because the mean of its divisors is an integer number (15745562637).

Almost surely, 2215330568484 is an apocalyptic number.

It is an amenable number.

215330568484 is a deficient number, since it is larger than the sum of its proper divisors (162562934804).

215330568484 is a wasteful number, since it uses less digits than its factorization.

215330568484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106815 (or 106813 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 49.

The spelling of 215330568484 in words is "two hundred fifteen billion, three hundred thirty million, five hundred sixty-eight thousand, four hundred eighty-four".

Divisors: 1 2 4 641 797 1282 1594 2564 3188 105373 210746 421492 510877 1021754 2043508 67544093 83982281 135088186 167964562 270176372 335929124 53832642121 107665284242 215330568484