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144050405 = 528810081
BaseRepresentation
bin10001001011000…
…00100011100101
3101001001112000012
420211200203211
5243334103110
622143300005
73366260012
oct1045404345
9331045005
10144050405
1174349224
12402aa605
1323ac7b35
14151ba709
15c9a6905
hex89608e5

144050405 has 4 divisors (see below), whose sum is σ = 172860492. Its totient is φ = 115240320.

The previous prime is 144050399. The next prime is 144050407. The reversal of 144050405 is 504050441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504050441 = 3311522811.

It can be written as a sum of positive squares in 2 ways, for example, as 51294244 + 92756161 = 7162^2 + 9631^2 .

It is not a de Polignac number, because 144050405 - 214 = 144034021 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 (144050407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14405036 + ... + 14405045.

It is an arithmetic number, because the mean of its divisors is an integer number (43215123).

Almost surely, 2144050405 is an apocalyptic number.

It is an amenable number.

144050405 is a deficient number, since it is larger than the sum of its proper divisors (28810087).

144050405 is an equidigital number, since it uses as much as digits as its factorization.

144050405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28810086.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 144050405 is about 12002.1000245790. The cubic root of 144050405 is about 524.2094284066.

The spelling of 144050405 in words is "one hundred forty-four million, fifty thousand, four hundred five".

Divisors: 1 5 28810081 144050405