| Base | Representation |
|---|---|
| bin | 11010100111001… |
| … | …11010100110100 |
| 3 | 120120002001102022 |
| 4 | 31103213110310 |
| 5 | 424122324440 |
| 6 | 34052532312 |
| 7 | 5350361603 |
| oct | 1523472464 |
| 9 | 516061368 |
| 10 | 223245620 |
| 11 | 10501a814 |
| 12 | 62921098 |
| 13 | 37335b00 |
| 14 | 21913a3a |
| 15 | 148ebcb5 |
| hex | d4e7534 |
223245620 has 54 divisors (see below), whose sum is σ = 509635602. Its totient is φ = 82108416.
The previous prime is 223245619. The next prime is 223245623. The reversal of 223245620 is 26542322.
It can be written as a sum of positive squares in 9 ways, for example, as 8271376 + 214974244 = 2876^2 + 14662^2 .
It is a super-3 number, since 3×2232456203 (a number of 26 digits) contains 333 as substring.
It is a Harshad number since it is a multiple of its sum of digits (26).
It is a self number, because there is not a number n which added to its sum of digits gives 223245620.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (223245623) by changing a digit.
It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 868532 + ... + 868788.
Almost surely, 2223245620 is an apocalyptic number.
223245620 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 223245620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254817801).
223245620 is an abundant number, since it is smaller than the sum of its proper divisors (286389982).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
223245620 is a wasteful number, since it uses less digits than its factorization.
223245620 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 549 (or 277 counting only the distinct ones).
The product of its (nonzero) digits is 5760, while the sum is 26.
The square root of 223245620 is about 14941.4062256536. The cubic root of 223245620 is about 606.6352591450.
Adding to 223245620 its reverse (26542322), we get a palindrome (249787942).
The spelling of 223245620 in words is "two hundred twenty-three million, two hundred forty-five thousand, six hundred twenty".
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