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2020120220 = 225438926393
BaseRepresentation
bin111100001101000…
…1001011010011100
312012210012201222102
41320122021122130
513114122321340
6532242104232
7101026511216
oct17032113234
95183181872
102020120220
1194733a248
1248464b078
132626a0411
141524155b6
15bc539215
hex7868969c

2020120220 has 48 divisors (see below), whose sum is σ = 4389850080. Its totient is φ = 780358656.

The previous prime is 2020120213. The next prime is 2020120229. The reversal of 2020120220 is 220210202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020120229) 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, 63344 + ... + 89736.

It is an arithmetic number, because the mean of its divisors is an integer number (91455210).

Almost surely, 22020120220 is an apocalyptic number.

2020120220 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 2020120220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2194925040).

2020120220 is an abundant number, since it is smaller than the sum of its proper divisors (2369729860).

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

2020120220 is a wasteful number, since it uses less digits than its factorization.

2020120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26534 (or 26532 counting only the distinct ones).

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

The square root of 2020120220 is about 44945.7475185362. The cubic root of 2020120220 is about 1264.1319420766.

Adding to 2020120220 its reverse (220210202), we get a palindrome (2240330422).

The spelling of 2020120220 in words is "two billion, twenty million, one hundred twenty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 43 86 89 172 178 215 356 430 445 860 890 1780 3827 7654 15308 19135 26393 38270 52786 76540 105572 131965 263930 527860 1134899 2269798 2348977 4539596 4697954 5674495 9395908 11348990 11744885 22697980 23489770 46979540 101006011 202012022 404024044 505030055 1010060110 2020120220