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13452943 = 71921849
BaseRepresentation
bin110011010100…
…011010001111
3221022110222011
4303110122033
511420443233
61200202051
7222230260
oct63243217
927273864
1013452943
117659439
124609327
132a3042a
141b02967
1512ab0cd
hexcd468f

13452943 has 4 divisors (see below), whose sum is σ = 15374800. Its totient is φ = 11531088.

The previous prime is 13452919. The next prime is 13452947. The reversal of 13452943 is 34925431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34925431 = 231518497.

It is a cyclic number.

It is not a de Polignac number, because 13452943 - 25 = 13452911 is a prime.

It is a super-2 number, since 2×134529432 = 361963350722498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13452947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960918 + ... + 960931.

It is an arithmetic number, because the mean of its divisors is an integer number (3843700).

Almost surely, 213452943 is an apocalyptic number.

13452943 is a deficient number, since it is larger than the sum of its proper divisors (1921857).

13452943 is an equidigital number, since it uses as much as digits as its factorization.

13452943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921856.

The product of its digits is 12960, while the sum is 31.

The square root of 13452943 is about 3667.8253775228. The cubic root of 13452943 is about 237.8331752328.

The spelling of 13452943 in words is "thirteen million, four hundred fifty-two thousand, nine hundred forty-three".

Divisors: 1 7 1921849 13452943