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215230 = 2521523
BaseRepresentation
bin110100100010111110
3101221020111
4310202332
523341410
64340234
71554331
oct644276
9357214
10215230
11137784
12a467a
1376c72
1458618
1543b8a
hex348be

215230 has 8 divisors (see below), whose sum is σ = 387432. Its totient is φ = 86088.

The previous prime is 215197. The next prime is 215239. The reversal of 215230 is 32512.

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

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 215230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10752 + ... + 10771.

It is an arithmetic number, because the mean of its divisors is an integer number (48429).

2215230 is an apocalyptic number.

215230 is a deficient number, since it is larger than the sum of its proper divisors (172202).

215230 is a wasteful number, since it uses less digits than its factorization.

215230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21530.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 215230 is about 463.9288738589. The cubic root of 215230 is about 59.9286188162.

Adding to 215230 its reverse (32512), we get a palindrome (247742).

The spelling of 215230 in words is "two hundred fifteen thousand, two hundred thirty".

Divisors: 1 2 5 10 21523 43046 107615 215230