| Base | Representation |
|---|---|
| bin | 101011111101… |
| … | …0010001100100 |
| 3 | 1121100211002200 |
| 4 | 1113322101210 |
| 5 | 21344421340 |
| 6 | 2141534500 |
| 7 | 366611142 |
| oct | 127722144 |
| 9 | 47324080 |
| 10 | 23045220 |
| 11 | 12010240 |
| 12 | 7874430 |
| 13 | 4a0b533 |
| 14 | 30bc592 |
| 15 | 2053330 |
| hex | 15fa464 |
23045220 has 144 divisors (see below), whose sum is σ = 77680512. Its totient is φ = 5483520.
The previous prime is 23045219. The next prime is 23045221. The reversal of 23045220 is 2254032.
It is an interprime number because it is at equal distance from previous prime (23045219) and next prime (23045221).
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 = 23045193 and 23045202.
It is not an unprimeable number, because it can be changed into a prime (23045221) by changing a digit.
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, 203884 + ... + 203996.
It is an arithmetic number, because the mean of its divisors is an integer number (539448).
Almost surely, 223045220 is an apocalyptic number.
23045220 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 23045220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38840256).
23045220 is an abundant number, since it is smaller than the sum of its proper divisors (54635292).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
23045220 is a wasteful number, since it uses less digits than its factorization.
23045220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 242 (or 237 counting only the distinct ones).
The product of its (nonzero) digits is 480, while the sum is 18.
The square root of 23045220 is about 4800.5437192051. The cubic root of 23045220 is about 284.5729523002.
Adding to 23045220 its reverse (2254032), we get a palindrome (25299252).
The spelling of 23045220 in words is "twenty-three million, forty-five thousand, two hundred twenty".
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