| Base | Representation |
|---|---|
| bin | 100100101110010… |
| … | …0001010011100100 |
| 3 | 10011212121220202200 |
| 4 | 1021130201103210 |
| 5 | 10010421310340 |
| 6 | 322134334500 |
| 7 | 42351432240 |
| oct | 11134412344 |
| 9 | 3155556680 |
| 10 | 1232213220 |
| 11 | 582609037 |
| 12 | 2a47ba430 |
| 13 | 168392964 |
| 14 | b9917420 |
| 15 | 732a0330 |
| hex | 497214e4 |
1232213220 has 144 divisors (see below), whose sum is σ = 4387289088. Its totient is φ = 274026240.
The previous prime is 1232213207. The next prime is 1232213233. The reversal of 1232213220 is 223122321.
1232213220 is a `hidden beast` number, since 1 + 232 + 213 + 220 = 666.
It is an interprime number because it is at equal distance from previous prime (1232213207) and next prime (1232213233).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 1232213193 and 1232213202.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33405 + ... + 59835.
Almost surely, 21232213220 is an apocalyptic number.
1232213220 is a gapful number since it is divisible by the number (10) 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 1232213220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2193644544).
1232213220 is an abundant number, since it is smaller than the sum of its proper divisors (3155075868).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1232213220 is a wasteful number, since it uses less digits than its factorization.
1232213220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 26490 (or 26485 counting only the distinct ones).
The product of its (nonzero) digits is 288, while the sum is 18.
The square root of 1232213220 is about 35102.8947524275. The cubic root of 1232213220 is about 1072.0835229068.
Adding to 1232213220 its reverse (223122321), we get a palindrome (1455335541).
The spelling of 1232213220 in words is "one billion, two hundred thirty-two million, two hundred thirteen thousand, two hundred twenty".
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