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12169913 = 75332803
BaseRepresentation
bin101110011011…
…001010111001
3211220021222112
4232123022321
511103414123
61112502105
7205304540
oct56331271
924807875
1012169913
116962488
1240aa935
1326a1442
14188b157
151105d78
hexb9b2b9

12169913 has 8 divisors (see below), whose sum is σ = 14171328. Its totient is φ = 10234224.

The previous prime is 12169891. The next prime is 12169933. The reversal of 12169913 is 31996121.

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

It is not a de Polignac number, because 12169913 - 216 = 12104377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12169913.

It is not an unprimeable number, because it can be changed into a prime (12169933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16031 + ... + 16772.

It is an arithmetic number, because the mean of its divisors is an integer number (1771416).

Almost surely, 212169913 is an apocalyptic number.

It is an amenable number.

12169913 is a deficient number, since it is larger than the sum of its proper divisors (2001415).

12169913 is an equidigital number, since it uses as much as digits as its factorization.

12169913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32863.

The product of its digits is 2916, while the sum is 32.

The square root of 12169913 is about 3488.5402391258. The cubic root of 12169913 is about 230.0183539228.

The spelling of 12169913 in words is "twelve million, one hundred sixty-nine thousand, nine hundred thirteen".

Divisors: 1 7 53 371 32803 229621 1738559 12169913