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230532015 = 357437173
BaseRepresentation
bin11011011110110…
…10001110101111
3121001210020110210
431233122032233
5433004011030
634513033503
75466330000
oct1557321657
9531706423
10230532015
1110914712a
1265255893
13389b749c
142288d1a7
151538abb0
hexdbda3af

230532015 has 80 divisors (see below), whose sum is σ = 444485088. Its totient is φ = 101945088.

The previous prime is 230532011. The next prime is 230532017. The reversal of 230532015 is 510235032.

It is not a de Polignac number, because 230532015 - 22 = 230532011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 230531982 and 230532000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230532011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1332469 + ... + 1332641.

Almost surely, 2230532015 is an apocalyptic number.

230532015 is a deficient number, since it is larger than the sum of its proper divisors (213953073).

230532015 is an equidigital number, since it uses as much as digits as its factorization.

230532015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 230532015 is about 15183.2807719544. The cubic root of 230532015 is about 613.1646119149.

Adding to 230532015 its reverse (510235032), we get a palindrome (740767047).

The spelling of 230532015 in words is "two hundred thirty million, five hundred thirty-two thousand, fifteen".

Divisors: 1 3 5 7 15 21 35 37 49 105 111 147 173 185 245 259 343 519 555 735 777 865 1029 1211 1295 1715 1813 2401 2595 3633 3885 5145 5439 6055 6401 7203 8477 9065 12005 12691 18165 19203 25431 27195 32005 36015 38073 42385 44807 59339 63455 88837 96015 127155 134421 178017 190365 224035 266511 296695 313649 415373 444185 672105 890085 940947 1246119 1332555 1568245 2076865 2195543 4704735 6230595 6586629 10977715 15368801 32933145 46106403 76844005 230532015