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144231154 = 2617116881
BaseRepresentation
bin10001001100011…
…00101011110010
3101001101200221121
420212030223302
5243410344104
622151212454
73400641664
oct1046145362
9331350847
10144231154
1174462001
124037712a
1323b5c1a2
1415226534
15c9e0254
hex898caf2

144231154 has 8 divisors (see below), whose sum is σ = 216699228. Its totient is φ = 71998080.

The previous prime is 144231151. The next prime is 144231163. The reversal of 144231154 is 451132441.

It can be written as a sum of positive squares in 2 ways, for example, as 98465929 + 45765225 = 9923^2 + 6765^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (144231151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57207 + ... + 59674.

Almost surely, 2144231154 is an apocalyptic number.

144231154 is a deficient number, since it is larger than the sum of its proper divisors (72468074).

144231154 is a wasteful number, since it uses less digits than its factorization.

144231154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117500.

The product of its digits is 1920, while the sum is 25.

The square root of 144231154 is about 12009.6275545914. The cubic root of 144231154 is about 524.4285894886.

Adding to 144231154 its reverse (451132441), we get a palindrome (595363595).

The spelling of 144231154 in words is "one hundred forty-four million, two hundred thirty-one thousand, one hundred fifty-four".

Divisors: 1 2 617 1234 116881 233762 72115577 144231154