Search a number
-
+
144464023 = 1113133093
BaseRepresentation
bin10001001110001…
…01100010010111
3101001211112101101
420213011202113
5243440322043
622200210531
73402631624
oct1047054227
9331745341
10144464023
1174600a60
1240469a47
1323c11192
141528734b
15ca3924d
hex89c5897

144464023 has 4 divisors (see below), whose sum is σ = 157597128. Its totient is φ = 131330920.

The previous prime is 144463997. The next prime is 144464053. The reversal of 144464023 is 320464441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320464441 = 1129133131.

It is a cyclic number.

It is not a de Polignac number, because 144464023 - 29 = 144463511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144463982 and 144464000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144464053) 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, 6566536 + ... + 6566557.

It is an arithmetic number, because the mean of its divisors is an integer number (39399282).

Almost surely, 2144464023 is an apocalyptic number.

144464023 is a deficient number, since it is larger than the sum of its proper divisors (13133105).

144464023 is a wasteful number, since it uses less digits than its factorization.

144464023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13133104.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 144464023 is about 12019.3187410934. The cubic root of 144464023 is about 524.7106771696.

The spelling of 144464023 in words is "one hundred forty-four million, four hundred sixty-four thousand, twenty-three".

Divisors: 1 11 13133093 144464023