Search a number
-
+
12631230 = 2325293479
BaseRepresentation
bin110000001011…
…110010111110
3212202201210100
4300023302332
511213144410
61130421530
7212235513
oct60136276
925681710
1012631230
117148037
1242918a6
132803401
14196b30a
1511978c0
hexc0bcbe

12631230 has 48 divisors (see below), whose sum is σ = 33022080. Its totient is φ = 3349824.

The previous prime is 12631193. The next prime is 12631237. The reversal of 12631230 is 3213621.

12631230 is a `hidden beast` number, since 1 + 2 + 631 + 2 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12631237) 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 23 ways as a sum of consecutive naturals, for example, 26131 + ... + 26609.

It is an arithmetic number, because the mean of its divisors is an integer number (687960).

Almost surely, 212631230 is an apocalyptic number.

12631230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12631230 is an abundant number, since it is smaller than the sum of its proper divisors (20390850).

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

12631230 is a wasteful number, since it uses less digits than its factorization.

12631230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785 (or 782 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 12631230 is about 3554.0441753023. The cubic root of 12631230 is about 232.8887703053. Note that the first 3 decimals are identical.

Adding to 12631230 its reverse (3213621), we get a palindrome (15844851).

The spelling of 12631230 in words is "twelve million, six hundred thirty-one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 293 479 586 879 958 1437 1465 1758 2395 2637 2874 2930 4311 4395 4790 5274 7185 8622 8790 13185 14370 21555 26370 43110 140347 280694 421041 701735 842082 1263123 1403470 2105205 2526246 4210410 6315615 12631230