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2020201320 = 233523731957
BaseRepresentation
bin111100001101001…
…1101001101101000
312012210100212020010
41320122131031220
513114132420240
6532243531520
7101030266524
oct17032351550
95183325203
102020201320
11947395175
12484689ba0
132626cb2c7
14152436d84
15bc553280
hex7869d368

2020201320 has 64 divisors (see below), whose sum is σ = 6324117120. Its totient is φ = 515297024.

The previous prime is 2020201289. The next prime is 2020201321. The reversal of 2020201320 is 231020202.

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 = 2020201296 and 2020201305.

It is not an unprimeable number, because it can be changed into a prime (2020201321) 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, 363219 + ... + 368738.

It is an arithmetic number, because the mean of its divisors is an integer number (98814330).

Almost surely, 22020201320 is an apocalyptic number.

2020201320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020201320 is an abundant number, since it is smaller than the sum of its proper divisors (4303915800).

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

2020201320 is a wasteful number, since it uses less digits than its factorization.

2020201320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731994 (or 731990 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2020201320 is about 44946.6497082931. The cubic root of 2020201320 is about 1264.1488585167.

Adding to 2020201320 its reverse (231020202), we get a palindrome (2251221522).

The spelling of 2020201320 in words is "two billion, twenty million, two hundred one thousand, three hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 23 24 30 40 46 60 69 92 115 120 138 184 230 276 345 460 552 690 920 1380 2760 731957 1463914 2195871 2927828 3659785 4391742 5855656 7319570 8783484 10979355 14639140 16835011 17566968 21958710 29278280 33670022 43917420 50505033 67340044 84175055 87834840 101010066 134680088 168350110 202020132 252525165 336700220 404040264 505050330 673400440 1010100660 2020201320