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214660 = 22510733
BaseRepresentation
bin110100011010000100
3101220110101
4310122010
523332120
64333444
71552555
oct643204
9356411
10214660
11137306
12a4284
1376924
145832c
154390a
hex34684

214660 has 12 divisors (see below), whose sum is σ = 450828. Its totient is φ = 85856.

The previous prime is 214657. The next prime is 214663. The reversal of 214660 is 66412.

It is an interprime number because it is at equal distance from previous prime (214657) and next prime (214663).

It can be written as a sum of positive squares in 2 ways, for example, as 43264 + 171396 = 208^2 + 414^2 .

It is not an unprimeable number, because it can be changed into a prime (214663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5347 + ... + 5386.

It is an arithmetic number, because the mean of its divisors is an integer number (37569).

2214660 is an apocalyptic number.

214660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214660 is an abundant number, since it is smaller than the sum of its proper divisors (236168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

214660 is a wasteful number, since it uses less digits than its factorization.

214660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10742 (or 10740 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 214660 is about 463.3141482839. The cubic root of 214660 is about 59.8756684650.

The spelling of 214660 in words is "two hundred fourteen thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 10733 21466 42932 53665 107330 214660