Search a number
-
+
144279471 = 372981493
BaseRepresentation
bin10001001100110…
…00011110101111
3101001111011020010
420212120132233
5243413420341
622152224303
73401232600
oct1046303657
9331434203
10144279471
1174495336
124039b093
1323b7818b
1415239da7
15c9ee716
hex89987af

144279471 has 12 divisors (see below), whose sum is σ = 223780632. Its totient is φ = 82445328.

The previous prime is 144279469. The next prime is 144279503. The reversal of 144279471 is 174972441.

It is not a de Polignac number, because 144279471 - 21 = 144279469 is a prime.

It is a super-3 number, since 3×1442794713 (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144279461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 490600 + ... + 490893.

It is an arithmetic number, because the mean of its divisors is an integer number (18648386).

Almost surely, 2144279471 is an apocalyptic number.

144279471 is a deficient number, since it is larger than the sum of its proper divisors (79501161).

144279471 is an equidigital number, since it uses as much as digits as its factorization.

144279471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981510 (or 981503 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 144279471 is about 12011.6389805888. The cubic root of 144279471 is about 524.4871436139.

The spelling of 144279471 in words is "one hundred forty-four million, two hundred seventy-nine thousand, four hundred seventy-one".

Divisors: 1 3 7 21 49 147 981493 2944479 6870451 20611353 48093157 144279471