| Base | Representation |
|---|---|
| bin | 100100011111100… |
| … | …1101110010000000 |
| 3 | 10011100011121211200 |
| 4 | 1020333031302000 |
| 5 | 10001434443242 |
| 6 | 321301541200 |
| 7 | 42226225302 |
| oct | 11077156200 |
| 9 | 3140147750 |
| 10 | 1224531072 |
| 11 | 579241356 |
| 12 | 2a2114800 |
| 13 | 1669030cb |
| 14 | b88b7972 |
| 15 | 7278404c |
| hex | 48fcdc80 |
1224531072 has 72 divisors (see below), whose sum is σ = 3527136795. Its totient is φ = 407781120.
The previous prime is 1224531037. The next prime is 1224531073. The reversal of 1224531072 is 2701354221.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
1224531072 is a `hidden beast` number, since 122 + 4 + 531 + 0 + 7 + 2 = 666.
It can be written as a sum of positive squares in only one way, i.e., 612265536 + 612265536 = 24744^2 + 24744^2 .
It is a tau number, because it is divible by the number of its divisors (72).
It is an ABA number since it can be written as A⋅BA, here for A=2, B=24744.
It is not an unprimeable number, because it can be changed into a prime (1224531073) by changing a digit.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1187197 + ... + 1188227.
Almost surely, 21224531072 is an apocalyptic number.
1224531072 is a gapful number since it is divisible by the number (12) 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 1224531072
1224531072 is an abundant number, since it is smaller than the sum of its proper divisors (2302605723).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1224531072 is an frugal number, since it uses more digits than its factorization.
1224531072 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2082 (or 1036 counting only the distinct ones).
The product of its (nonzero) digits is 3360, while the sum is 27.
The square root of 1224531072 is about 34993.3003873599. The cubic root of 1224531072 is about 1069.8509333200.
Adding to 1224531072 its reverse (2701354221), we get a palindrome (3925885293).
The spelling of 1224531072 in words is "one billion, two hundred twenty-four million, five hundred thirty-one thousand, seventy-two".
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