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20000221230 = 23511131945949
BaseRepresentation
bin10010101000000110…
…110010100000101110
31220121211221111201110
4102220012302200232
5311430024034410
613104334052450
71305424034613
oct225006624056
956554844643
1020000221230
118533670260
123a6204a126
131b69754542
14d7a34250a
157c0cb1720
hex4a81b282e

20000221230 has 64 divisors (see below), whose sum is σ = 52405056000. Its totient is φ = 4844757120.

The previous prime is 20000221211. The next prime is 20000221261. The reversal of 20000221230 is 3212200002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 412296 + ... + 458244.

It is an arithmetic number, because the mean of its divisors is an integer number (818829000).

Almost surely, 220000221230 is an apocalyptic number.

20000221230 is an abundant number, since it is smaller than the sum of its proper divisors (32404834770).

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

20000221230 is a wasteful number, since it uses less digits than its factorization.

20000221230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47289.

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20000221230 its reverse (3212200002), we get a palindrome (23212421232).

The spelling of 20000221230 in words is "twenty billion, two hundred twenty-one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 1319 2638 3957 6595 7914 13190 14509 19785 29018 39570 43527 45949 72545 87054 91898 137847 145090 217635 229745 275694 435270 459490 505439 689235 1010878 1378470 1516317 2527195 3032634 5054390 7581585 15163170 60606731 121213462 181820193 303033655 363640386 606067310 666674041 909100965 1333348082 1818201930 2000022123 3333370205 4000044246 6666740410 10000110615 20000221230