| Base | Representation |
|---|---|
| bin | 11011011000100… |
| … | …01011010000000 |
| 3 | 121000020110010001 |
| 4 | 31230101122000 |
| 5 | 432301200230 |
| 6 | 34443245344 |
| 7 | 5456332552 |
| oct | 1554213200 |
| 9 | 530213101 |
| 10 | 229709440 |
| 11 | 108735114 |
| 12 | 64b19854 |
| 13 | 38789c5c |
| 14 | 227174d2 |
| 15 | 152770ca |
| hex | db11680 |
229709440 has 128 divisors (see below), whose sum is σ = 596185920. Its totient is φ = 84295680.
The previous prime is 229709437. The next prime is 229709443. The reversal of 229709440 is 44907922.
It is an interprime number because it is at equal distance from previous prime (229709437) and next prime (229709443).
It is a tau number, because it is divible by the number of its divisors (128).
It is a super-2 number, since 2×2297094402 = 105532853650227200, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 229709440.
It is not an unprimeable number, because it can be changed into a prime (229709443) 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 15 ways as a sum of consecutive naturals, for example, 467595 + ... + 468085.
Almost surely, 2229709440 is an apocalyptic number.
229709440 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 229709440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298092960).
229709440 is an abundant number, since it is smaller than the sum of its proper divisors (366476480).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
229709440 is a wasteful number, since it uses less digits than its factorization.
229709440 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 570 (or 558 counting only the distinct ones).
The product of its (nonzero) digits is 36288, while the sum is 37.
The square root of 229709440 is about 15156.1683812235. The cubic root of 229709440 is about 612.4344530718.
The spelling of 229709440 in words is "two hundred twenty-nine million, seven hundred nine thousand, four hundred forty".
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