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12863713 = 17756689
BaseRepresentation
bin110001000100…
…100011100001
3220012112200211
4301010203201
511243114323
61135414121
7214224352
oct61044341
926175624
1012863713
117296775
124384341
132885185
1419cbd29
1511e170d
hexc448e1

12863713 has 4 divisors (see below), whose sum is σ = 13620420. Its totient is φ = 12107008.

The previous prime is 12863699. The next prime is 12863723. The reversal of 12863713 is 31736821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31736821 = 191670359.

It can be written as a sum of positive squares in 2 ways, for example, as 11343424 + 1520289 = 3368^2 + 1233^2 .

It is a cyclic number.

It is not a de Polignac number, because 12863713 - 25 = 12863681 is a prime.

It is a super-2 number, since 2×128637132 = 330950224292738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12863723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378328 + ... + 378361.

It is an arithmetic number, because the mean of its divisors is an integer number (3405105).

Almost surely, 212863713 is an apocalyptic number.

It is an amenable number.

12863713 is a deficient number, since it is larger than the sum of its proper divisors (756707).

12863713 is an equidigital number, since it uses as much as digits as its factorization.

12863713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756706.

The product of its digits is 6048, while the sum is 31.

The square root of 12863713 is about 3586.6018736403. The cubic root of 12863713 is about 234.3088975777.

The spelling of 12863713 in words is "twelve million, eight hundred sixty-three thousand, seven hundred thirteen".

Divisors: 1 17 756689 12863713