Base | Representation |
---|---|
bin | 100101000101000… |
… | …0010001000000010 |
3 | 10012201002001220020 |
4 | 1022022002020002 |
5 | 10022000103010 |
6 | 323242154310 |
7 | 42555023235 |
oct | 11212021002 |
9 | 3181061806 |
10 | 1244144130 |
11 | 589317999 |
12 | 2a87b2996 |
13 | 16a9ac378 |
14 | bb34141c |
15 | 7435a470 |
hex | 4a282202 |
1244144130 has 32 divisors (see below), whose sum is σ = 3143102400. Its totient is φ = 314309952.
The previous prime is 1244144123. The next prime is 1244144131. The reversal of 1244144130 is 314414421.
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 1244144130.
It is not an unprimeable number, because it can be changed into a prime (1244144131) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1090785 + ... + 1091924.
It is an arithmetic number, because the mean of its divisors is an integer number (98221950).
Almost surely, 21244144130 is an apocalyptic number.
1244144130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
1244144130 is an abundant number, since it is smaller than the sum of its proper divisors (1898958270).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1244144130 is a wasteful number, since it uses less digits than its factorization.
1244144130 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2182738.
The product of its (nonzero) digits is 1536, while the sum is 24.
The square root of 1244144130 is about 35272.4273335420. The cubic root of 1244144130 is about 1075.5325661159.
Adding to 1244144130 its reverse (314414421), we get a palindrome (1558558551).
The spelling of 1244144130 in words is "one billion, two hundred forty-four million, one hundred forty-four thousand, one hundred thirty".
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