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230305930 = 2523030593
BaseRepresentation
bin11011011101000…
…11000010001010
3121001100202100021
431232203002022
5432424242210
634504131054
75464365601
oct1556430212
9531322307
10230305930
11109002288
1265166a8a
13389385ca
1422830a38
1515343bda
hexdba308a

230305930 has 8 divisors (see below), whose sum is σ = 414550692. Its totient is φ = 92122368.

The previous prime is 230305891. The next prime is 230305931. The reversal of 230305930 is 39503032.

It can be written as a sum of positive squares in 2 ways, for example, as 230159241 + 146689 = 15171^2 + 383^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 230305895 and 230305904.

It is not an unprimeable number, because it can be changed into a prime (230305931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11515287 + ... + 11515306.

Almost surely, 2230305930 is an apocalyptic number.

230305930 is a deficient number, since it is larger than the sum of its proper divisors (184244762).

230305930 is a wasteful number, since it uses less digits than its factorization.

230305930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23030600.

The product of its (nonzero) digits is 2430, while the sum is 25.

The square root of 230305930 is about 15175.8337497483. The cubic root of 230305930 is about 612.9641008439.

Adding to 230305930 its reverse (39503032), we get a palindrome (269808962).

The spelling of 230305930 in words is "two hundred thirty million, three hundred five thousand, nine hundred thirty".

Divisors: 1 2 5 10 23030593 46061186 115152965 230305930