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144330901 = 11132174567
BaseRepresentation
bin10001001101001…
…01000010010101
3101001120202202221
420212211002111
5243422042101
622153302341
73401535541
oct1046450225
9331522687
10144330901
117451aa40
12404049b1
1323b95700
1415250a21
15ca0eaa1
hex89a5095

144330901 has 24 divisors (see below), whose sum is σ = 180563904. Its totient is φ = 113967360.

The previous prime is 144330899. The next prime is 144330917. The reversal of 144330901 is 109033441.

It is a happy number.

It is not a de Polignac number, because 144330901 - 21 = 144330899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144330001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29320 + ... + 33886.

It is an arithmetic number, because the mean of its divisors is an integer number (7523496).

Almost surely, 2144330901 is an apocalyptic number.

144330901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144330901 is a deficient number, since it is larger than the sum of its proper divisors (36233003).

144330901 is a wasteful number, since it uses less digits than its factorization.

144330901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4621 (or 4608 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 144330901 is about 12013.7796300748. The cubic root of 144330901 is about 524.5494559423.

The spelling of 144330901 in words is "one hundred forty-four million, three hundred thirty thousand, nine hundred one".

Divisors: 1 11 13 17 143 169 187 221 1859 2431 2873 4567 31603 50237 59371 77639 653081 771823 854029 1009307 8490053 11102377 13120991 144330901