| Base | Representation |
|---|---|
| bin | 11100111110101… |
| … | …10111001000010 |
| 3 | 121221102211020000 |
| 4 | 32133112321002 |
| 5 | 444213220000 |
| 6 | 40042300430 |
| 7 | 6011220000 |
| oct | 1637267102 |
| 9 | 557384200 |
| 10 | 243101250 |
| 11 | 115251627 |
| 12 | 694b7716 |
| 13 | 3b4985c2 |
| 14 | 24401a70 |
| 15 | 16520000 |
| hex | e7d6e42 |
243101250 has 250 divisors, whose sum is σ = 794091903. Its totient is φ = 55566000.
The previous prime is 243101233. The next prime is 243101251. The reversal of 243101250 is 52101342.
243101250 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 3 ways, for example, as 56205009 + 186896241 = 7497^2 + 13671^2 .
It is a tau number, because it is divible by the number of its divisors (250).
It is an ABA number since it can be written as A⋅BA, here for A=2, B=11025.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is not an unprimeable number, because it can be changed into a prime (243101251) by changing a digit.
It is a polite number, since it can be written in 124 ways as a sum of consecutive naturals, for example, 34728747 + ... + 34728753.
Almost surely, 2243101250 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 243101250
243101250 is an abundant number, since it is smaller than the sum of its proper divisors (550990653).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
243101250 is an frugal number, since it uses more digits than its factorization.
243101250 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 62 (or 17 counting only the distinct ones).
The product of its (nonzero) digits is 240, while the sum is 18.
The square root of 243101250 is about 15591.7045251634. The cubic root of 243101250 is about 624.1118050401. Note that the first 3 decimals are identical.
Multiplying 243101250 by its sum of digits (18), we get a square (4375822500 = 661502).
243101250 divided by its sum of digits (18) gives a square (13505625 = 36752).
Adding to 243101250 its reverse (52101342), we get a palindrome (295202592).
The spelling of 243101250 in words is "two hundred forty-three million, one hundred one thousand, two hundred fifty".
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