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12986741 = 37373941
BaseRepresentation
bin110001100010…
…100101110101
3220102210110102
4301202211311
511311033431
61142203445
7215246135
oct61424565
926383412
1012986741
117370149
124423585
1328c9181
141a20ac5
151217dcb
hexc62975

12986741 has 8 divisors (see below), whose sum is σ = 13387704. Its totient is φ = 12588480.

The previous prime is 12986723. The next prime is 12986783. The reversal of 12986741 is 14768921.

12986741 is digitally balanced in base 2 and base 3, because in such bases 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 5424241 + 7562500 = 2329^2 + 2750^2 .

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 12986741 - 210 = 12985717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12986695 and 12986704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12986041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13331 + ... + 14271.

It is an arithmetic number, because the mean of its divisors is an integer number (1673463).

Almost surely, 212986741 is an apocalyptic number.

It is an amenable number.

12986741 is a deficient number, since it is larger than the sum of its proper divisors (400963).

12986741 is an equidigital number, since it uses as much as digits as its factorization.

12986741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351.

The product of its digits is 24192, while the sum is 38.

The square root of 12986741 is about 3603.7121139181. The cubic root of 12986741 is about 235.0535022290.

The spelling of 12986741 in words is "twelve million, nine hundred eighty-six thousand, seven hundred forty-one".

Divisors: 1 37 373 941 13801 34817 350993 12986741