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20100032242100 = 22528972713272341
BaseRepresentation
bin1001001000111111001110…
…10010000010000110110100
32122011112200210202220202022
410210133213102002012310
510113304331223221400
6110425454412132312
74143115352034446
oct444374722020664
978145623686668
1020100032242100
11644a4152150a8
122307630167098
13b2a56a6a1b35
144d6bbd6b2496
1524ccabd3db85
hex1247e74821b4

20100032242100 has 144 divisors (see below), whose sum is σ = 44219984739840. Its totient is φ = 7929369676800.

The previous prime is 20100032242093. The next prime is 20100032242127. The reversal of 20100032242100 is 124223000102.

It is a super-2 number, since 2×201000322421002 (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8586086930 + ... + 8586089270.

It is an arithmetic number, because the mean of its divisors is an integer number (307083227360).

Almost surely, 220100032242100 is an apocalyptic number.

20100032242100 is a gapful number since it is divisible by the number (20) 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 20100032242100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22109992369920).

20100032242100 is an abundant number, since it is smaller than the sum of its proper divisors (24119952497740).

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

20100032242100 is a wasteful number, since it uses less digits than its factorization.

20100032242100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4498 (or 4491 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20100032242100 its reverse (124223000102), we get a palindrome (20224255242202).

The spelling of 20100032242100 in words is "twenty trillion, one hundred billion, thirty-two million, two hundred forty-two thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 89 100 178 356 445 727 890 1327 1454 1780 2225 2341 2654 2908 3635 4450 4682 5308 6635 7270 8900 9364 11705 13270 14540 18175 23410 26540 33175 36350 46820 58525 64703 66350 72700 117050 118103 129406 132700 208349 234100 236206 258812 323515 416698 472412 590515 647030 833396 964729 1041745 1181030 1294060 1617575 1701907 1929458 2083490 2362060 2952575 3106507 3235150 3403814 3858916 4166980 4823645 5208725 5905150 6213014 6470300 6807628 8509535 9647290 10417450 11810300 12426028 15532535 17019070 19294580 20834900 24118225 31065070 34038140 42547675 48236450 62130140 77662675 85095350 85860881 96472900 151469723 155325350 170190700 171721762 276479123 302939446 310650700 343443524 429304405 552958246 605878892 757348615 858608810 1105916492 1382395615 1514697230 1717217620 2146522025 2258430589 2764791230 3029394460 3786743075 4293044050 4516861178 5529582460 6911978075 7573486150 8586088100 9033722356 11292152945 13823956150 15146972300 22584305890 27647912300 45168611780 56460764725 112921529450 201000322421 225843058900 402000644842 804001289684 1005001612105 2010003224210 4020006448420 5025008060525 10050016121050 20100032242100