| Base | Representation |
|---|---|
| bin | 11010001110101… |
| … | …00000100101000 |
| 3 | 120100000020010010 |
| 4 | 31013110010220 |
| 5 | 422311133112 |
| 6 | 33455451520 |
| 7 | 5311101510 |
| oct | 1507240450 |
| 9 | 510006103 |
| 10 | 220021032 |
| 11 | 103218070 |
| 12 | 61826ba0 |
| 13 | 3677717a |
| 14 | 21314840 |
| 15 | 144b163c |
| hex | d1d4128 |
220021032 has 128 divisors (see below), whose sum is σ = 696407040. Its totient is φ = 56263680.
The previous prime is 220021031. The next prime is 220021037. The reversal of 220021032 is 230120022.
It is a Harshad number since it is a multiple of its sum of digits (12).
It is a junction number, because it is equal to n+sod(n) for n = 220020999 and 220021017.
It is not an unprimeable number, because it can be changed into a prime (220021031) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122928 + ... + 124704.
It is an arithmetic number, because the mean of its divisors is an integer number (5440680).
Almost surely, 2220021032 is an apocalyptic number.
220021032 is a gapful number since it is divisible by the number (22) 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 220021032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348203520).
220021032 is an abundant number, since it is smaller than the sum of its proper divisors (476386008).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
220021032 is a wasteful number, since it uses less digits than its factorization.
220021032 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1871 (or 1867 counting only the distinct ones).
The product of its (nonzero) digits is 48, while the sum is 12.
The square root of 220021032 is about 14833.1059458227. The cubic root of 220021032 is about 603.7003103703.
Adding to 220021032 its reverse (230120022), we get a palindrome (450141054).
It can be divided in two parts, 2200 and 21032, that added together give a palindrome (23232).
The spelling of 220021032 in words is "two hundred twenty million, twenty-one thousand, thirty-two".
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