Search a number
-
+
1212230230 = 25223543601
BaseRepresentation
bin100100001000001…
…0010101001010110
310010111000200020221
41020100102221112
54440312331410
6320142144554
742016533631
oct11020225126
93114020227
101212230230
115722aa572
12299b8215a
131641b71c3
14b6dd4c18
15716544da
hex48412a56

1212230230 has 16 divisors (see below), whose sum is σ = 2191803264. Its totient is φ = 482716800.

The previous prime is 1212230219. The next prime is 1212230287. The reversal of 1212230230 is 320322121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269571 + ... + 274030.

It is an arithmetic number, because the mean of its divisors is an integer number (136987704).

Almost surely, 21212230230 is an apocalyptic number.

1212230230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212230230 is a deficient number, since it is larger than the sum of its proper divisors (979573034).

1212230230 is a wasteful number, since it uses less digits than its factorization.

1212230230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543831.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1212230230 is about 34817.0968060233. The cubic root of 1212230230 is about 1066.2565286267.

Adding to 1212230230 its reverse (320322121), we get a palindrome (1532552351).

The spelling of 1212230230 in words is "one billion, two hundred twelve million, two hundred thirty thousand, two hundred thirty".

Divisors: 1 2 5 10 223 446 1115 2230 543601 1087202 2718005 5436010 121223023 242446046 606115115 1212230230