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144469705 = 5173167017
BaseRepresentation
bin10001001110001…
…10111011001001
3101001211211011211
420213012323021
5243441012310
622200253121
73402654322
oct1047067311
9331754154
10144469705
1174605256
12404711a1
1323c13943
1415289449
15ca3ac8a
hex89c6ec9

144469705 has 8 divisors (see below), whose sum is σ = 174366792. Its totient is φ = 114907008.

The previous prime is 144469697. The next prime is 144469727. The reversal of 144469705 is 507964441.

144469705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 60637369 + 83832336 = 7787^2 + 9156^2 .

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 144469705 - 23 = 144469697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82644 + ... + 84373.

It is an arithmetic number, because the mean of its divisors is an integer number (21795849).

Almost surely, 2144469705 is an apocalyptic number.

It is an amenable number.

144469705 is a deficient number, since it is larger than the sum of its proper divisors (29897087).

144469705 is a wasteful number, since it uses less digits than its factorization.

144469705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167195.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 144469705 is about 12019.5551082392. Note that the first 3 decimals coincide. The cubic root of 144469705 is about 524.7175563148.

The spelling of 144469705 in words is "one hundred forty-four million, four hundred sixty-nine thousand, seven hundred five".

Divisors: 1 5 173 865 167017 835085 28893941 144469705