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20100210020 = 2251197941903
BaseRepresentation
bin10010101110000100…
…001101110101100100
31220212211002110112222
4102232010031311210
5312131123210040
613122305131512
71311046652252
oct225604156544
956784073488
1020100210020
118585054320
123a8b629b98
131b84392bc7
14d8972d5d2
157c9962bb5
hex4ae10dd64

20100210020 has 48 divisors (see below), whose sum is σ = 46522522368. Its totient is φ = 7233807360.

The previous prime is 20100209977. The next prime is 20100210023. The reversal of 20100210020 is 2001200102.

It is not an unprimeable number, because it can be changed into a prime (20100210023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 449612 + ... + 492291.

It is an arithmetic number, because the mean of its divisors is an integer number (969219216).

Almost surely, 220100210020 is an apocalyptic number.

20100210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100210020 is an abundant number, since it is smaller than the sum of its proper divisors (26422312348).

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

20100210020 is a wasteful number, since it uses less digits than its factorization.

20100210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942020 (or 942018 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 20100210020 its reverse (2001200102), we get a palindrome (22101410122).

The spelling of 20100210020 in words is "twenty billion, one hundred million, two hundred ten thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 97 110 194 220 388 485 970 1067 1940 2134 4268 5335 10670 21340 941903 1883806 3767612 4709515 9419030 10360933 18838060 20721866 41443732 51804665 91364591 103609330 182729182 207218660 365458364 456822955 913645910 1005010501 1827291820 2010021002 4020042004 5025052505 10050105010 20100210020