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2020210220 = 2257241137367
BaseRepresentation
bin111100001101001…
…1111011000101100
312012210101022102202
41320122133120230
513114133211340
6532244041032
7101030334500
oct17032373054
95183338382
102020210220
119473a0926
12484693178
13262702382
1415243a300
15bc555c15
hex7869f62c

2020210220 has 144 divisors (see below), whose sum is σ = 5106229632. Its totient is φ = 668989440.

The previous prime is 2020210187. The next prime is 2020210223. The reversal of 2020210220 is 220120202.

It is not an unprimeable number, because it can be changed into a prime (2020210223) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 5504477 + ... + 5504843.

It is an arithmetic number, because the mean of its divisors is an integer number (35459928).

Almost surely, 22020210220 is an apocalyptic number.

2020210220 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 2020210220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2553114816).

2020210220 is an abundant number, since it is smaller than the sum of its proper divisors (3086019412).

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

2020210220 is a wasteful number, since it uses less digits than its factorization.

2020210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 2020210220 is about 44946.7487144510. The cubic root of 2020210220 is about 1264.1507149173.

Adding to 2020210220 its reverse (220120202), we get a palindrome (2240330422).

The spelling of 2020210220 in words is "two billion, twenty million, two hundred ten thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 41 49 70 82 98 137 140 164 196 205 245 274 287 367 410 490 548 574 685 734 820 959 980 1148 1370 1435 1468 1835 1918 2009 2569 2740 2870 3670 3836 4018 4795 5138 5617 5740 6713 7340 8036 9590 10045 10276 11234 12845 13426 15047 17983 19180 20090 22468 25690 26852 28085 30094 33565 35966 39319 40180 50279 51380 56170 60188 67130 71932 75235 78638 89915 100558 105329 112340 134260 150470 157276 179830 196595 201116 210658 251395 275233 300940 351953 359660 393190 421316 502790 526645 550466 703906 737303 786380 1005580 1053290 1100932 1376165 1407812 1474606 1759765 2061439 2106580 2463671 2752330 2949212 3519530 3686515 4122878 4927342 5504660 7039060 7373030 8245756 9854684 10307195 12318355 14430073 14746060 20614390 24636710 28860146 41228780 49273420 57720292 72150365 101010511 144300730 202021022 288601460 404042044 505052555 1010105110 2020210220