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2020010220 = 2232531563643
BaseRepresentation
bin111100001100110…
…1110100011101100
312012210000011002100
41320121232203230
513114110311340
6532235455100
7101025542424
oct17031564354
95183004070
102020010220
11947274638
124845b7490
13262662327
141523c7484
15bc516830
hex7866e8ec

2020010220 has 144 divisors (see below), whose sum is σ = 6346109952. Its totient is φ = 519557760.

The previous prime is 2020010203. The next prime is 2020010231. The reversal of 2020010220 is 220100202.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

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, 3141219 + ... + 3141861.

It is an arithmetic number, because the mean of its divisors is an integer number (44070208).

Almost surely, 22020010220 is an apocalyptic number.

2020010220 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 2020010220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3173054976).

2020010220 is an abundant number, since it is smaller than the sum of its proper divisors (4326099732).

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

2020010220 is a wasteful number, since it uses less digits than its factorization.

2020010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252 (or 1247 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2020010220 is about 44944.5238043524. The cubic root of 2020010220 is about 1264.1089967363.

Adding to 2020010220 its reverse (220100202), we get a palindrome (2240110422).

The spelling of 2020010220 in words is "two billion, twenty million, ten thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 31 36 45 60 62 90 93 124 155 180 186 279 310 372 465 558 563 620 643 930 1116 1126 1286 1395 1689 1860 1929 2252 2572 2790 2815 3215 3378 3858 5067 5580 5630 5787 6430 6756 7716 8445 9645 10134 11260 11574 12860 16890 17453 19290 19933 20268 23148 25335 28935 33780 34906 38580 39866 50670 52359 57870 59799 69812 79732 87265 99665 101340 104718 115740 119598 157077 174530 179397 199330 209436 239196 261795 298995 314154 349060 358794 362009 398660 523590 597990 628308 717588 724018 785385 896985 1047180 1086027 1195980 1448036 1570770 1793970 1810045 2172054 3141540 3258081 3587940 3620090 4344108 5430135 6516162 7240180 10860270 11222279 13032324 16290405 21720540 22444558 32580810 33666837 44889116 56111395 65161620 67333674 101000511 112222790 134667348 168334185 202001022 224445580 336668370 404002044 505002555 673336740 1010005110 2020010220