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12153307 = 47258581
BaseRepresentation
bin101110010111…
…000111011011
3211212110012111
4232113013123
511102401212
61112253151
7205205245
oct56270733
924773174
1012153307
116950a61
1240a11b7
132696a0a
141885095
151100ea7
hexb971db

12153307 has 4 divisors (see below), whose sum is σ = 12411936. Its totient is φ = 11894680.

The previous prime is 12153299. The next prime is 12153313. The reversal of 12153307 is 70335121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70335121 = 292425349.

It is a cyclic number.

It is not a de Polignac number, because 12153307 - 23 = 12153299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12153397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129244 + ... + 129337.

It is an arithmetic number, because the mean of its divisors is an integer number (3102984).

Almost surely, 212153307 is an apocalyptic number.

12153307 is a deficient number, since it is larger than the sum of its proper divisors (258629).

12153307 is an equidigital number, since it uses as much as digits as its factorization.

12153307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258628.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 12153307 is about 3486.1593480505. The cubic root of 12153307 is about 229.9136853181.

Adding to 12153307 its reverse (70335121), we get a palindrome (82488428).

The spelling of 12153307 in words is "twelve million, one hundred fifty-three thousand, three hundred seven".

Divisors: 1 47 258581 12153307