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12506113 = 31974159
BaseRepresentation
bin101111101101…
…010000000001
3212112101011101
4233231100001
511200143423
61124014401
7211204654
oct57552001
925471141
1012506113
117072034
124231401
13278b489
14193789b
1511707ad
hexbed401

12506113 has 8 divisors (see below), whose sum is σ = 13045760. Its totient is φ = 11975040.

The previous prime is 12506083. The next prime is 12506147. The reversal of 12506113 is 31160521.

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

It is a cyclic number.

It is not a de Polignac number, because 12506113 - 29 = 12505601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12536113) by changing a digit.

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, 928 + ... + 5086.

It is an arithmetic number, because the mean of its divisors is an integer number (1630720).

Almost surely, 212506113 is an apocalyptic number.

It is an amenable number.

12506113 is a deficient number, since it is larger than the sum of its proper divisors (539647).

12506113 is an equidigital number, since it uses as much as digits as its factorization.

12506113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4287.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 12506113 is about 3536.3983090144. The cubic root of 12506113 is about 232.1172675586.

Adding to 12506113 its reverse (31160521), we get a palindrome (43666634).

The spelling of 12506113 in words is "twelve million, five hundred six thousand, one hundred thirteen".

Divisors: 1 31 97 3007 4159 128929 403423 12506113