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12923201 = 64120161
BaseRepresentation
bin110001010011…
…000101000001
3220022120022002
4301103011001
511302020301
61140553345
7214562654
oct61230501
926276262
1012923201
117327435
1243b2855
1328a6285
141a0589b
15120416b
hexc53141

12923201 has 4 divisors (see below), whose sum is σ = 12944004. Its totient is φ = 12902400.

The previous prime is 12923191. The next prime is 12923203. The reversal of 12923201 is 10232921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10232921 = 73140177.

It can be written as a sum of positive squares in 2 ways, for example, as 10233601 + 2689600 = 3199^2 + 1640^2 .

It is a cyclic number.

It is not a de Polignac number, because 12923201 - 222 = 8728897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12923203) 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, 9440 + ... + 10721.

It is an arithmetic number, because the mean of its divisors is an integer number (3236001).

Almost surely, 212923201 is an apocalyptic number.

It is an amenable number.

12923201 is a deficient number, since it is larger than the sum of its proper divisors (20803).

12923201 is an equidigital number, since it uses as much as digits as its factorization.

12923201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20802.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 12923201 is about 3594.8853945571. The cubic root of 12923201 is about 234.6695279420.

The spelling of 12923201 in words is "twelve million, nine hundred twenty-three thousand, two hundred one".

Divisors: 1 641 20161 12923201