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270385 = 5173181
BaseRepresentation
bin1000010000000110001
3111201220021
41002000301
532123020
65443441
72204203
oct1020061
9451807
10270385
11175165
12110581
13960bb
1470773
15551aa
hex42031

270385 has 8 divisors (see below), whose sum is σ = 343656. Its totient is φ = 203520.

The previous prime is 270379. The next prime is 270407. The reversal of 270385 is 583072.

It can be written as a sum of positive squares in 4 ways, for example, as 12321 + 258064 = 111^2 + 508^2 .

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

It is not a de Polignac number, because 270385 - 213 = 262193 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1506 + ... + 1675.

It is an arithmetic number, because the mean of its divisors is an integer number (42957).

2270385 is an apocalyptic number.

It is an amenable number.

270385 is a deficient number, since it is larger than the sum of its proper divisors (73271).

270385 is a wasteful number, since it uses less digits than its factorization.

270385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 270385 is about 519.9855767230. The cubic root of 270385 is about 64.6637467535.

The spelling of 270385 in words is "two hundred seventy thousand, three hundred eighty-five".

Divisors: 1 5 17 85 3181 15905 54077 270385