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144404211 = 3759116549
BaseRepresentation
bin10001001101101…
…10111011110011
3101001201111100010
420212312323303
5243431413321
622155030003
73402262350
oct1046667363
9331644303
10144404211
1174570026
124043b303
1323bbcba3
141526d627
15ca26676
hex89b6ef3

144404211 has 16 divisors (see below), whose sum is σ = 223776000. Its totient is φ = 81117408.

The previous prime is 144404177. The next prime is 144404219. The reversal of 144404211 is 112404441.

It is not a de Polignac number, because 144404211 - 27 = 144404083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (144404219) 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 15 ways as a sum of consecutive naturals, for example, 57036 + ... + 59513.

It is an arithmetic number, because the mean of its divisors is an integer number (13986000).

Almost surely, 2144404211 is an apocalyptic number.

144404211 is a deficient number, since it is larger than the sum of its proper divisors (79371789).

144404211 is a wasteful number, since it uses less digits than its factorization.

144404211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116618.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 144404211 is about 12016.8303225102. The cubic root of 144404211 is about 524.6382523849.

Adding to 144404211 its reverse (112404441), we get a palindrome (256808652).

The spelling of 144404211 in words is "one hundred forty-four million, four hundred four thousand, two hundred eleven".

Divisors: 1 3 7 21 59 177 413 1239 116549 349647 815843 2447529 6876391 20629173 48134737 144404211