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230506529 = 11232989353
BaseRepresentation
bin11011011110101…
…00000000100001
3121001201221111212
431233110000201
5433002202104
634512315505
75466162461
oct1557240041
9531657455
10230506529
11109129a70
1265242b95
13389a89c6
1422883ba1
151538336e
hexdbd4021

230506529 has 32 divisors (see below), whose sum is σ = 275270400. Its totient is φ = 190812160.

The previous prime is 230506517. The next prime is 230506547. The reversal of 230506529 is 925605032.

It is not a de Polignac number, because 230506529 - 24 = 230506513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230506495 and 230506504.

It is not an unprimeable number, because it can be changed into a prime (230506579) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 652817 + ... + 653169.

It is an arithmetic number, because the mean of its divisors is an integer number (8602200).

Almost surely, 2230506529 is an apocalyptic number.

230506529 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

230506529 is a deficient number, since it is larger than the sum of its proper divisors (44763871).

230506529 is a wasteful number, since it uses less digits than its factorization.

230506529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 230506529 is about 15182.4414703301. The cubic root of 230506529 is about 613.1420153583.

The spelling of 230506529 in words is "two hundred thirty million, five hundred six thousand, five hundred twenty-nine".

Divisors: 1 11 23 29 89 253 319 353 667 979 2047 2581 3883 7337 8119 10237 22517 28391 31417 59363 89309 112607 235451 345587 652993 722591 911093 2589961 7948501 10022023 20955139 230506529