Search a number
-
+
144801479 = 2933171559
BaseRepresentation
bin10001010000101…
…11111011000111
3101002110200021202
420220113323013
5244032121404
622211333115
73405535514
oct1050277307
9332420252
10144801479
1174811549
12405b119b
1323ccb964
141533430b
15caa421e
hex8a17ec7

144801479 has 8 divisors (see below), whose sum is σ = 145847520. Its totient is φ = 143759776.

The previous prime is 144801457. The next prime is 144801523. The reversal of 144801479 is 974108441.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-144801479 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 (144801409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92102 + ... + 93660.

It is an arithmetic number, because the mean of its divisors is an integer number (18230940).

Almost surely, 2144801479 is an apocalyptic number.

144801479 is a deficient number, since it is larger than the sum of its proper divisors (1046041).

144801479 is a wasteful number, since it uses less digits than its factorization.

144801479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 144801479 is about 12033.3486195655. The cubic root of 144801479 is about 525.1189196975.

The spelling of 144801479 in words is "one hundred forty-four million, eight hundred one thousand, four hundred seventy-nine".

Divisors: 1 293 317 1559 92881 456787 494203 144801479