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12130355 = 55874133
BaseRepresentation
bin101110010001…
…100000110011
3211211021201102
4232101200303
511101132410
61111555015
7205051316
oct56214063
924737642
1012130355
116935796
12408ba6b
132689433
14187a97d
1510e92a5
hexb91833

12130355 has 8 divisors (see below), whose sum is σ = 14584752. Its totient is φ = 9685408.

The previous prime is 12130351. The next prime is 12130357. The reversal of 12130355 is 55303121.

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

It is a cyclic number.

It is not a de Polignac number, because 12130355 - 22 = 12130351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12130351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 869 + ... + 5001.

It is an arithmetic number, because the mean of its divisors is an integer number (1823094).

Almost surely, 212130355 is an apocalyptic number.

12130355 is a deficient number, since it is larger than the sum of its proper divisors (2454397).

12130355 is an equidigital number, since it uses as much as digits as its factorization.

12130355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4725.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 12130355 is about 3482.8659176029. The cubic root of 12130355 is about 229.7688604206.

Adding to 12130355 its reverse (55303121), we get a palindrome (67433476).

The spelling of 12130355 in words is "twelve million, one hundred thirty thousand, three hundred fifty-five".

Divisors: 1 5 587 2935 4133 20665 2426071 12130355