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12163445 = 571672081
BaseRepresentation
bin101110011001…
…100101110101
3211212222002222
4232121211311
511103212240
61112412125
7205246640
oct56314565
924788088
1012163445
116958638
1240a7045
13269b508
141888a57
151103eb5
hexb99975

12163445 has 16 divisors (see below), whose sum is σ = 16789248. Its totient is φ = 8286720.

The previous prime is 12163423. The next prime is 12163519. The reversal of 12163445 is 54436121.

It is not a de Polignac number, because 12163445 - 216 = 12097909 is a prime.

It is a Curzon number.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4805 + ... + 6885.

It is an arithmetic number, because the mean of its divisors is an integer number (1049328).

Almost surely, 212163445 is an apocalyptic number.

It is an amenable number.

12163445 is a deficient number, since it is larger than the sum of its proper divisors (4625803).

12163445 is a wasteful number, since it uses less digits than its factorization.

12163445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260.

The product of its digits is 2880, while the sum is 26.

The square root of 12163445 is about 3487.6130806040. The cubic root of 12163445 is about 229.9775970618.

Adding to 12163445 its reverse (54436121), we get a palindrome (66599566).

The spelling of 12163445 in words is "twelve million, one hundred sixty-three thousand, four hundred forty-five".

Divisors: 1 5 7 35 167 835 1169 2081 5845 10405 14567 72835 347527 1737635 2432689 12163445