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12066047 = 71723721
BaseRepresentation
bin101110000001…
…110011111111
3211201000111122
4232001303333
511042103142
61110341155
7204362660
oct56016377
924630448
1012066047
1168a1444
12405a7bb
132666096
141861367
1510d51d2
hexb81cff

12066047 has 4 divisors (see below), whose sum is σ = 13789776. Its totient is φ = 10342320.

The previous prime is 12066023. The next prime is 12066049. The reversal of 12066047 is 74066021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74066021 = 671105463.

It is a cyclic number.

It is not a de Polignac number, because 12066047 - 28 = 12065791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12066049) 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, 861854 + ... + 861867.

It is an arithmetic number, because the mean of its divisors is an integer number (3447444).

Almost surely, 212066047 is an apocalyptic number.

12066047 is a deficient number, since it is larger than the sum of its proper divisors (1723729).

12066047 is an equidigital number, since it uses as much as digits as its factorization.

12066047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723728.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 12066047 is about 3473.6215971231. The cubic root of 12066047 is about 229.3621077128.

Subtracting from 12066047 its sum of digits (26), we obtain a palindrome (12066021).

The spelling of 12066047 in words is "twelve million, sixty-six thousand, forty-seven".

Divisors: 1 7 1723721 12066047