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223310020 = 22561183041
BaseRepresentation
bin11010100111101…
…11000011000100
3120120012022202111
431103313003010
5424131410040
634054150404
75351050423
oct1523670304
9516168674
10223310020
1110506413a
1262952404
133735920b
142192d2ba
1514910dea
hexd4f70c4

223310020 has 24 divisors (see below), whose sum is σ = 476641368. Its totient is φ = 87859200.

The previous prime is 223309997. The next prime is 223310023. The reversal of 223310020 is 20013322.

It is a happy number.

223310020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6160324 + 217149696 = 2482^2 + 14736^2 .

It is not an unprimeable number, because it can be changed into a prime (223310023) 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, 90301 + ... + 92740.

It is an arithmetic number, because the mean of its divisors is an integer number (19860057).

Almost surely, 2223310020 is an apocalyptic number.

223310020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223310020 is an abundant number, since it is smaller than the sum of its proper divisors (253331348).

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

223310020 is a wasteful number, since it uses less digits than its factorization.

223310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183111 (or 183109 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 223310020 is about 14943.5611552267. The cubic root of 223310020 is about 606.6935858656.

Adding to 223310020 its reverse (20013322), we get a palindrome (243323342).

The spelling of 223310020 in words is "two hundred twenty-three million, three hundred ten thousand, twenty".

Divisors: 1 2 4 5 10 20 61 122 244 305 610 1220 183041 366082 732164 915205 1830410 3660820 11165501 22331002 44662004 55827505 111655010 223310020