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230020515 = 3255111567
BaseRepresentation
bin11011011010111…
…01010110100011
3121000211020211100
431231131112203
5432341124030
634454045443
75462066514
oct1555352643
9530736740
10230020515
111089278aa
1265049883
133886871a
1422798a0b
15152d9360
hexdb5d5a3

230020515 has 12 divisors (see below), whose sum is σ = 398702304. Its totient is φ = 122677584.

The previous prime is 230020513. The next prime is 230020541. The reversal of 230020515 is 515020032.

It is a happy number.

230020515 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 230020515 - 21 = 230020513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (230020513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2555739 + ... + 2555828.

It is an arithmetic number, because the mean of its divisors is an integer number (33225192).

Almost surely, 2230020515 is an apocalyptic number.

230020515 is a deficient number, since it is larger than the sum of its proper divisors (168681789).

230020515 is a wasteful number, since it uses less digits than its factorization.

230020515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5111578 (or 5111575 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 230020515 is about 15166.4272325423. The cubic root of 230020515 is about 612.7107834856.

Adding to 230020515 its reverse (515020032), we get a palindrome (745040547).

The spelling of 230020515 in words is "two hundred thirty million, twenty thousand, five hundred fifteen".

Divisors: 1 3 5 9 15 45 5111567 15334701 25557835 46004103 76673505 230020515