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243430 = 25112213
BaseRepresentation
bin111011011011100110
3110100220221
4323123212
530242210
65114554
72032465
oct733346
9410827
10243430
11156990
12b8a5a
1386a55
14649dc
154c1da
hex3b6e6

243430 has 16 divisors (see below), whose sum is σ = 478224. Its totient is φ = 88480.

The previous prime is 243421. The next prime is 243431. The reversal of 243430 is 34342.

243430 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2 + 42 + 48 + 36 + 311 + 0 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243431) 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, 997 + ... + 1216.

It is an arithmetic number, because the mean of its divisors is an integer number (29889).

2243430 is an apocalyptic number.

243430 is a deficient number, since it is larger than the sum of its proper divisors (234794).

243430 is a wasteful number, since it uses less digits than its factorization.

243430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 243430 is about 493.3862584223. The cubic root of 243430 is about 62.4393010693.

Adding to 243430 its reverse (34342), we get a palindrome (277772).

The spelling of 243430 in words is "two hundred forty-three thousand, four hundred thirty".

Divisors: 1 2 5 10 11 22 55 110 2213 4426 11065 22130 24343 48686 121715 243430