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12102349 = 71728907
BaseRepresentation
bin101110001010…
…101011001101
3211202212022011
4232022223031
511044233344
61111221221
7204603550
oct56125315
924685264
1012102349
116916746
124077811
13267976c
141870697
1510e0d34
hexb8aacd

12102349 has 4 divisors (see below), whose sum is σ = 13831264. Its totient is φ = 10373436.

The previous prime is 12102331. The next prime is 12102371. The reversal of 12102349 is 94320121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12102349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102329) 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 3 ways as a sum of consecutive naturals, for example, 864447 + ... + 864460.

It is an arithmetic number, because the mean of its divisors is an integer number (3457816).

Almost surely, 212102349 is an apocalyptic number.

It is an amenable number.

12102349 is a deficient number, since it is larger than the sum of its proper divisors (1728915).

12102349 is an equidigital number, since it uses as much as digits as its factorization.

12102349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728914.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 12102349 is about 3478.8430548100. The cubic root of 12102349 is about 229.5918976065.

The spelling of 12102349 in words is "twelve million, one hundred two thousand, three hundred forty-nine".

Divisors: 1 7 1728907 12102349