| Base | Representation |
|---|---|
| bin | 111100010101011… |
| … | …001111011111100 |
| 3 | 2121112201100000200 |
| 4 | 330111121323330 |
| 5 | 4033113303340 |
| 6 | 244235523500 |
| 7 | 34040635221 |
| oct | 7425317374 |
| 9 | 2545640020 |
| 10 | 1012244220 |
| 11 | 47a427079 |
| 12 | 242bb9590 |
| 13 | 1319363a0 |
| 14 | 98617948 |
| 15 | 5dcee330 |
| hex | 3c559efc |
1012244220 has 144 divisors (see below), whose sum is σ = 3340183392. Its totient is φ = 246643200.
The previous prime is 1012244213. The next prime is 1012244221. The reversal of 1012244220 is 224422101.
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 = 1012244193 and 1012244202.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1012244221) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 234199 + ... + 238481.
It is an arithmetic number, because the mean of its divisors is an integer number (23195718).
Almost surely, 21012244220 is an apocalyptic number.
1012244220 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 1012244220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1670091696).
1012244220 is an abundant number, since it is smaller than the sum of its proper divisors (2327939172).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1012244220 is a wasteful number, since it uses less digits than its factorization.
1012244220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4412 (or 4407 counting only the distinct ones).
The product of its (nonzero) digits is 256, while the sum is 18.
The square root of 1012244220 is about 31815.7857045838. The cubic root of 1012244220 is about 1004.0648611822.
Adding to 1012244220 its reverse (224422101), we get a palindrome (1236666321).
The spelling of 1012244220 in words is "one billion, twelve million, two hundred forty-four thousand, two hundred twenty".
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