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12958145 = 513718917
BaseRepresentation
bin110001011011…
…100111000001
3220101100020022
4301123213001
511304130040
61141423225
7215066564
oct61334701
926340208
1012958145
117350712
12440ab15
1328b9155
141a144db
15120e6b5
hexc5b9c1

12958145 has 8 divisors (see below), whose sum is σ = 15664104. Its totient is φ = 10290304.

The previous prime is 12958123. The next prime is 12958159. The reversal of 12958145 is 54185921.

12958145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3323329 + 9634816 = 1823^2 + 3104^2 .

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 12958145 - 210 = 12957121 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8774 + ... + 10143.

It is an arithmetic number, because the mean of its divisors is an integer number (1958013).

Almost surely, 212958145 is an apocalyptic number.

It is an amenable number.

12958145 is a deficient number, since it is larger than the sum of its proper divisors (2705959).

12958145 is a wasteful number, since it uses less digits than its factorization.

12958145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19059.

The product of its digits is 14400, while the sum is 35.

The square root of 12958145 is about 3599.7423518913. The cubic root of 12958145 is about 234.8808510226.

The spelling of 12958145 in words is "twelve million, nine hundred fifty-eight thousand, one hundred forty-five".

Divisors: 1 5 137 685 18917 94585 2591629 12958145