| Base | Representation |
|---|---|
| bin | 101010010110… |
| … | …1011100100000 |
| 3 | 1112210012020100 |
| 4 | 1110231130200 |
| 5 | 21141044430 |
| 6 | 2111542400 |
| 7 | 356515140 |
| oct | 124553440 |
| 9 | 45705210 |
| 10 | 22206240 |
| 11 | 11597971 |
| 12 | 752aa00 |
| 13 | 47a66b4 |
| 14 | 2d40920 |
| 15 | 1e39960 |
| hex | 152d720 |
22206240 has 144 divisors (see below), whose sum is σ = 86643648. Its totient is φ = 5073408.
The previous prime is 22206229. The next prime is 22206263. The reversal of 22206240 is 4260222.
It is a happy number.
22206240 is a `hidden beast` number, since 22 + 20 + 624 + 0 = 666.
It is a tau number, because it is divible by the number of its divisors (144).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is an unprimeable number.
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 23 ways as a sum of consecutive naturals, for example, 8979 + ... + 11181.
It is an arithmetic number, because the mean of its divisors is an integer number (601692).
Almost surely, 222206240 is an apocalyptic number.
22206240 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 22206240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43321824).
22206240 is an abundant number, since it is smaller than the sum of its proper divisors (64437408).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
22206240 is a wasteful number, since it uses less digits than its factorization.
22206240 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2231 (or 2220 counting only the distinct ones).
The product of its (nonzero) digits is 384, while the sum is 18.
The square root of 22206240 is about 4712.3497323522. The cubic root of 22206240 is about 281.0768059614.
Adding to 22206240 its reverse (4260222), we get a palindrome (26466462).
The spelling of 22206240 in words is "twenty-two million, two hundred six thousand, two hundred forty".
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