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161048289 = 3149360287
BaseRepresentation
bin10011001100101…
…10011011100001
3102020001002201110
421212112123201
5312212021124
623551453533
73663613353
oct1146263341
9366032643
10161048289
11829a8a66
1245b272a9
132749995c
14175630d3
15e213029
hex99966e1

161048289 has 8 divisors (see below), whose sum is σ = 216172800. Its totient is φ = 106644656.

The previous prime is 161048233. The next prime is 161048311. The reversal of 161048289 is 982840161.

161048289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 161048289 - 211 = 161046241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161046289) 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, 179697 + ... + 180590.

It is an arithmetic number, because the mean of its divisors is an integer number (27021600).

Almost surely, 2161048289 is an apocalyptic number.

It is an amenable number.

161048289 is a deficient number, since it is larger than the sum of its proper divisors (55124511).

161048289 is a wasteful number, since it uses less digits than its factorization.

161048289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360439.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 161048289 is about 12690.4802509598. The cubic root of 161048289 is about 544.0665659335.

The spelling of 161048289 in words is "one hundred sixty-one million, forty-eight thousand, two hundred eighty-nine".

Divisors: 1 3 149 447 360287 1080861 53682763 161048289