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20041441220 = 2252971486679
BaseRepresentation
bin10010101010100100…
…000001111111000100
31220201201111200220202
4102222210001333010
5312021102104340
613112405350032
71306434303533
oct225244017704
956651450822
1020041441220
118554964469
123a73a08318
131b75157478
14d819d231a
157c4704c15
hex4aa901fc4

20041441220 has 48 divisors (see below), whose sum is σ = 44151609600. Its totient is φ = 7631111040.

The previous prime is 20041441181. The next prime is 20041441241. The reversal of 20041441220 is 2214414002.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20041441192 and 20041441201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202160 + ... + 284519.

It is an arithmetic number, because the mean of its divisors is an integer number (919825200).

Almost surely, 220041441220 is an apocalyptic number.

20041441220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20041441220 is an abundant number, since it is smaller than the sum of its proper divisors (24110168380).

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

20041441220 is a wasteful number, since it uses less digits than its factorization.

20041441220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486788 (or 486786 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20041441220 its reverse (2214414002), we get a palindrome (22255855222).

The spelling of 20041441220 in words is "twenty billion, forty-one million, four hundred forty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 29 58 71 116 142 145 284 290 355 580 710 1420 2059 4118 8236 10295 20590 41180 486679 973358 1946716 2433395 4866790 9733580 14113691 28227382 34554209 56454764 69108418 70568455 138216836 141136910 172771045 282273820 345542090 691084180 1002072061 2004144122 4008288244 5010360305 10020720610 20041441220