Search a number
-
+
144623171 = 7111878223
BaseRepresentation
bin10001001111011…
…00011001000011
3101002010121200202
420213230121003
5244010420141
622203435415
73404163620
oct1047543103
9332117622
10144623171
11746aa590
1240525b6b
1323c68754
14152c9347
15ca6b49b
hex89ec643

144623171 has 8 divisors (see below), whose sum is σ = 180309504. Its totient is φ = 112693320.

The previous prime is 144623137. The next prime is 144623173. The reversal of 144623171 is 171326441.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 144623171 - 26 = 144623107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144623173) 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 7 ways as a sum of consecutive naturals, for example, 939035 + ... + 939188.

It is an arithmetic number, because the mean of its divisors is an integer number (22538688).

Almost surely, 2144623171 is an apocalyptic number.

144623171 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

144623171 is a deficient number, since it is larger than the sum of its proper divisors (35686333).

144623171 is a wasteful number, since it uses less digits than its factorization.

144623171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878241.

The product of its digits is 4032, while the sum is 29.

The square root of 144623171 is about 12025.9374270782. The cubic root of 144623171 is about 524.9032880056.

The spelling of 144623171 in words is "one hundred forty-four million, six hundred twenty-three thousand, one hundred seventy-one".

Divisors: 1 7 11 77 1878223 13147561 20660453 144623171