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144130244 = 2237973853
BaseRepresentation
bin10001001011101…
…00000011000100
3101001012120112012
420211310003010
5243344131434
622145113352
73400041536
oct1045640304
9331176465
10144130244
11743a3205
1240328858
1323b2528b
14151db856
15c9c03ce
hex89740c4

144130244 has 12 divisors (see below), whose sum is σ = 259045164. Its totient is φ = 70117344.

The previous prime is 144130241. The next prime is 144130297. The reversal of 144130244 is 442031441.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 52736644 + 91393600 = 7262^2 + 9560^2 .

It is not an unprimeable number, because it can be changed into a prime (144130241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486779 + ... + 487074.

It is an arithmetic number, because the mean of its divisors is an integer number (21587097).

Almost surely, 2144130244 is an apocalyptic number.

It is an amenable number.

144130244 is a deficient number, since it is larger than the sum of its proper divisors (114914920).

144130244 is a wasteful number, since it uses less digits than its factorization.

144130244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973894 (or 973892 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 144130244 is about 12005.4256067830. The cubic root of 144130244 is about 524.3062570752.

Adding to 144130244 its reverse (442031441), we get a palindrome (586161685).

The spelling of 144130244 in words is "one hundred forty-four million, one hundred thirty thousand, two hundred forty-four".

Divisors: 1 2 4 37 74 148 973853 1947706 3895412 36032561 72065122 144130244