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230144556 = 223172311131
BaseRepresentation
bin11011011011110…
…11101000101100
3121001001112222110
431231323220230
5432404111211
634500444020
75463124245
oct1555735054
9531045873
10230144556
11108a02014
12650a9610
13388b0015
14227cbccc
1515310ea6
hexdb7ba2c

230144556 has 24 divisors (see below), whose sum is σ = 537363904. Its totient is φ = 76663440.

The previous prime is 230144533. The next prime is 230144567. The reversal of 230144556 is 655441032.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15111 + ... + 26241.

Almost surely, 2230144556 is an apocalyptic number.

It is an amenable number.

230144556 is an abundant number, since it is smaller than the sum of its proper divisors (307219348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230144556 is a wasteful number, since it uses less digits than its factorization.

230144556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12861 (or 12859 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 230144556 is about 15170.5160096814. The cubic root of 230144556 is about 612.8209006215.

Adding to 230144556 its reverse (655441032), we get a palindrome (885585588).

The spelling of 230144556 in words is "two hundred thirty million, one hundred forty-four thousand, five hundred fifty-six".

Divisors: 1 2 3 4 6 12 1723 3446 5169 6892 10338 11131 20676 22262 33393 44524 66786 133572 19178713 38357426 57536139 76714852 115072278 230144556