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12926269 = 47275027
BaseRepresentation
bin110001010011…
…110100111101
3220022201111201
4301103310331
511302120034
61141015501
7214604626
oct61236475
926281451
1012926269
117329774
1243b4591
1328a77a5
141a06a4d
151205014
hexc53d3d

12926269 has 4 divisors (see below), whose sum is σ = 13201344. Its totient is φ = 12651196.

The previous prime is 12926267. The next prime is 12926279. The reversal of 12926269 is 96262921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96262921 = 139692539.

It is a cyclic number.

It is not a de Polignac number, because 12926269 - 21 = 12926267 is a prime.

It is a super-2 number, since 2×129262692 = 334176860520722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12926267) 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, 137467 + ... + 137560.

It is an arithmetic number, because the mean of its divisors is an integer number (3300336).

Almost surely, 212926269 is an apocalyptic number.

It is an amenable number.

12926269 is a deficient number, since it is larger than the sum of its proper divisors (275075).

12926269 is an equidigital number, since it uses as much as digits as its factorization.

12926269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275074.

The product of its digits is 23328, while the sum is 37.

The square root of 12926269 is about 3595.3120865928. The cubic root of 12926269 is about 234.6880968488.

The spelling of 12926269 in words is "twelve million, nine hundred twenty-six thousand, two hundred sixty-nine".

Divisors: 1 47 275027 12926269