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13188145 = 53677187
BaseRepresentation
bin110010010011…
…110000110001
3220211000201211
4302103300301
511334010040
61150400121
7220045255
oct62236061
926730654
1013188145
1174984a3
124500041
132969a49
141a74265
1512578ea
hexc93c31

13188145 has 8 divisors (see below), whose sum is σ = 15871104. Its totient is φ = 10520304.

The previous prime is 13188137. The next prime is 13188187. The reversal of 13188145 is 54188131.

13188145 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 13188145 - 23 = 13188137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 1759 + ... + 5428.

It is an arithmetic number, because the mean of its divisors is an integer number (1983888).

Almost surely, 213188145 is an apocalyptic number.

It is an amenable number.

13188145 is a deficient number, since it is larger than the sum of its proper divisors (2682959).

13188145 is an equidigital number, since it uses as much as digits as its factorization.

13188145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7559.

The product of its digits is 3840, while the sum is 31.

The square root of 13188145 is about 3631.5485677600. The cubic root of 13188145 is about 236.2623781576.

The spelling of 13188145 in words is "thirteen million, one hundred eighty-eight thousand, one hundred forty-five".

Divisors: 1 5 367 1835 7187 35935 2637629 13188145