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12057913 = 717195333
BaseRepresentation
bin101101111111…
…110100111001
3211200121100101
4231333310321
511041323123
61110235401
7204330160
oct55776471
924617311
1012057913
11689631a
124055b61
13266247a
14185c3d7
1510d2aad
hexb7fd39

12057913 has 16 divisors (see below), whose sum is σ = 15361920. Its totient is φ = 9213696.

The previous prime is 12057887. The next prime is 12057917. The reversal of 12057913 is 31975021.

It is a cyclic number.

It is not a de Polignac number, because 12057913 - 29 = 12057401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12057917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 406 + ... + 4927.

It is an arithmetic number, because the mean of its divisors is an integer number (960120).

Almost surely, 212057913 is an apocalyptic number.

It is an amenable number.

12057913 is a deficient number, since it is larger than the sum of its proper divisors (3304007).

12057913 is a wasteful number, since it uses less digits than its factorization.

12057913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5376.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 12057913 is about 3472.4505756022. The cubic root of 12057913 is about 229.3105567019.

The spelling of 12057913 in words is "twelve million, fifty-seven thousand, nine hundred thirteen".

Divisors: 1 7 17 19 119 133 323 2261 5333 37331 90661 101327 634627 709289 1722559 12057913