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223242020 = 225193111889
BaseRepresentation
bin11010100111001…
…10011100100100
3120120001212110222
431103212130210
5424122221040
634052503512
75350345241
oct1523463444
9516055428
10223242020
11105018041
126291ab98
1337334291
14219125c8
15148eabb5
hexd4e6724

223242020 has 48 divisors (see below), whose sum is σ = 495331200. Its totient is φ = 84280320.

The previous prime is 223241987. The next prime is 223242031. The reversal of 223242020 is 20242322.

223242020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×2232420203 (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 223242020.

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, 117236 + ... + 119124.

It is an arithmetic number, because the mean of its divisors is an integer number (10319400).

Almost surely, 2223242020 is an apocalyptic number.

223242020 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 223242020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247665600).

223242020 is an abundant number, since it is smaller than the sum of its proper divisors (272089180).

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

223242020 is a wasteful number, since it uses less digits than its factorization.

223242020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228 (or 2226 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 223242020 is about 14941.2857545795. The cubic root of 223242020 is about 606.6319983141.

Adding to 223242020 its reverse (20242322), we get a palindrome (243484342).

The spelling of 223242020 in words is "two hundred twenty-three million, two hundred forty-two thousand, twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 311 380 622 1244 1555 1889 3110 3778 5909 6220 7556 9445 11818 18890 23636 29545 35891 37780 59090 71782 118180 143564 179455 358910 587479 717820 1174958 2349916 2937395 5874790 11162101 11749580 22324202 44648404 55810505 111621010 223242020