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214385 = 553809
BaseRepresentation
bin110100010101110001
3101220002012
4310111301
523330020
64332305
71552013
oct642561
9356065
10214385
11137086
12a4095
1376772
14581b3
15437c5
hex34571

214385 has 8 divisors (see below), whose sum is σ = 262440. Its totient is φ = 168064.

The previous prime is 214381. The next prime is 214391. The reversal of 214385 is 583412.

214385 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 78961 + 135424 = 281^2 + 368^2 .

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 214385 - 22 = 214381 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 214385.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214381) 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, 140 + ... + 669.

It is an arithmetic number, because the mean of its divisors is an integer number (32805).

2214385 is an apocalyptic number.

It is an amenable number.

214385 is a deficient number, since it is larger than the sum of its proper divisors (48055).

214385 is an equidigital number, since it uses as much as digits as its factorization.

214385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867.

The product of its digits is 960, while the sum is 23.

The square root of 214385 is about 463.0172782953. The cubic root of 214385 is about 59.8500887184.

Adding to 214385 its reverse (583412), we get a palindrome (797797).

The spelling of 214385 in words is "two hundred fourteen thousand, three hundred eighty-five".

Divisors: 1 5 53 265 809 4045 42877 214385