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2223103220 = 225138550397
BaseRepresentation
bin1000010010000001…
…1101110011110100
312201221011100022022
42010200131303310
514023103300340
61004332452312
7106043031332
oct20440356364
95657140268
102223103220
11a4097a398
1252061a098
132957603c0
14171372b52
15d02823b5
hex8481dcf4

2223103220 has 24 divisors (see below), whose sum is σ = 5027634024. Its totient is φ = 820838016.

The previous prime is 2223103163. The next prime is 2223103229. The reversal of 2223103220 is 223013222.

It can be written as a sum of positive squares in 4 ways, for example, as 238578916 + 1984524304 = 15446^2 + 44548^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223103229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4274939 + ... + 4275458.

It is an arithmetic number, because the mean of its divisors is an integer number (209484751).

Almost surely, 22223103220 is an apocalyptic number.

2223103220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2223103220 is an abundant number, since it is smaller than the sum of its proper divisors (2804530804).

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

2223103220 is a wasteful number, since it uses less digits than its factorization.

2223103220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8550419 (or 8550417 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2223103220 is about 47149.7955456861. The cubic root of 2223103220 is about 1305.1283070901.

Adding to 2223103220 its reverse (223013222), we get a palindrome (2446116442).

The spelling of 2223103220 in words is "two billion, two hundred twenty-three million, one hundred three thousand, two hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 8550397 17100794 34201588 42751985 85503970 111155161 171007940 222310322 444620644 555775805 1111551610 2223103220