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219008064 = 263113857
BaseRepresentation
bin11010000110111…
…00110001000000
3120021002202120210
431003130301000
5422031224224
633422034120
75266352322
oct1503346100
9507082523
10219008064
11102696000
1261418940
13364b1092
142112d612
1514361429
hexd0dcc40

219008064 has 112 divisors (see below), whose sum is σ = 638104896. Its totient is φ = 66288640.

The previous prime is 219008039. The next prime is 219008089. The reversal of 219008064 is 460800912.

It is an interprime number because it is at equal distance from previous prime (219008039) and next prime (219008089).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255124 + ... + 255980.

Almost surely, 2219008064 is an apocalyptic number.

219008064 is a gapful number since it is divisible by the number (24) 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 219008064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319052448).

219008064 is an abundant number, since it is smaller than the sum of its proper divisors (419096832).

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

219008064 is an equidigital number, since it uses as much as digits as its factorization.

219008064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905 (or 873 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 219008064 is about 14798.9210417517. The cubic root of 219008064 is about 602.7724142455.

Adding to 219008064 its reverse (460800912), we get a palindrome (679808976).

The spelling of 219008064 in words is "two hundred nineteen million, eight thousand, sixty-four".

Divisors: 1 2 3 4 6 8 11 12 16 22 24 32 33 44 48 64 66 88 96 121 132 176 192 242 264 352 363 484 528 704 726 857 968 1056 1331 1452 1714 1936 2112 2571 2662 2904 3428 3872 3993 5142 5324 5808 6856 7744 7986 9427 10284 10648 11616 13712 15972 18854 20568 21296 23232 27424 28281 31944 37708 41136 42592 54848 56562 63888 75416 82272 85184 103697 113124 127776 150832 164544 207394 226248 255552 301664 311091 414788 452496 603328 622182 829576 904992 1140667 1244364 1659152 1809984 2281334 2488728 3318304 3422001 4562668 4977456 6636608 6844002 9125336 9954912 13688004 18250672 19909824 27376008 36501344 54752016 73002688 109504032 219008064