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2020202220 = 2235377911519
BaseRepresentation
bin111100001101001…
…1101011011101100
312012210100220110110
41320122131123230
513114132432340
6532243540020
7101030302251
oct17032353354
95183326413
102020202220
11947395913
1248468a610
132626cb83a
14152437428
15bc553680
hex7869d6ec

2020202220 has 96 divisors (see below), whose sum is σ = 5883494400. Its totient is φ = 517480704.

The previous prime is 2020202207. The next prime is 2020202237. The reversal of 2020202220 is 222020202.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2020202196 and 2020202205.

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, 169621 + ... + 181139.

It is an arithmetic number, because the mean of its divisors is an integer number (61286400).

Almost surely, 22020202220 is an apocalyptic number.

2020202220 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 2020202220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2941747200).

2020202220 is an abundant number, since it is smaller than the sum of its proper divisors (3863292180).

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

2020202220 is a wasteful number, since it uses less digits than its factorization.

2020202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11647 (or 11645 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 2020202220 is about 44946.6597201616. The cubic root of 2020202220 is about 1264.1490462429.

Adding to 2020202220 its reverse (222020202), we get a palindrome (2242222422).

The spelling of 2020202220 in words is "two billion, twenty million, two hundred two thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 37 60 74 79 111 148 158 185 222 237 316 370 395 444 474 555 740 790 948 1110 1185 1580 2220 2370 2923 4740 5846 8769 11519 11692 14615 17538 23038 29230 34557 35076 43845 46076 57595 58460 69114 87690 115190 138228 172785 175380 230380 345570 426203 691140 852406 910001 1278609 1704812 1820002 2131015 2557218 2730003 3640004 4262030 4550005 5114436 5460006 6393045 8524060 9100010 10920012 12786090 13650015 18200020 25572180 27300030 33670037 54600060 67340074 101010111 134680148 168350185 202020222 336700370 404040444 505050555 673400740 1010101110 2020202220