| Base | Representation |
|---|---|
| bin | 1110001010101111001… |
| … | …0101000001101010000 |
| 3 | 212021020222200121121101 |
| 4 | 3202223302220031100 |
| 5 | 12441440442010100 |
| 6 | 303452214034144 |
| 7 | 23404454535223 |
| oct | 3425362501520 |
| 9 | 767228617541 |
| 10 | 243400344400 |
| 11 | 94253170324 |
| 12 | 3b20a348954 |
| 13 | 19c4c9b8235 |
| 14 | bad01095ba |
| 15 | 64e873086a |
| hex | 38abca8350 |
243400344400 has 120 divisors (see below), whose sum is σ = 593160528600. Its totient is φ = 95971584000.
The previous prime is 243400344377. The next prime is 243400344401. The reversal of 243400344400 is 4443004342.
It can be written as a sum of positive squares in 12 ways, for example, as 12623870736 + 230776473664 = 112356^2 + 480392^2 .
It is a super-2 number, since 2×2434003444002 (a number of 24 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (243400344401) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9238446 + ... + 9264754.
It is an arithmetic number, because the mean of its divisors is an integer number (4943004405).
Almost surely, 2243400344400 is an apocalyptic number.
243400344400 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 243400344400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296580264300).
243400344400 is an abundant number, since it is smaller than the sum of its proper divisors (349760184200).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
243400344400 is a wasteful number, since it uses less digits than its factorization.
243400344400 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 26657 (or 26646 counting only the distinct ones).
The product of its (nonzero) digits is 18432, while the sum is 28.
Adding to 243400344400 its reverse (4443004342), we get a palindrome (247843348742).
The spelling of 243400344400 in words is "two hundred forty-three billion, four hundred million, three hundred forty-four thousand, four hundred".
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