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13975293 = 34658431
BaseRepresentation
bin110101010011…
…111011111101
3222022000111110
4311103323331
512034202133
61215312233
7226534203
oct65237375
928260443
1013975293
117985932
12481b679
132b84107
141bdb073
151360c63
hexd53efd

13975293 has 4 divisors (see below), whose sum is σ = 18633728. Its totient is φ = 9316860.

The previous prime is 13975289. The next prime is 13975319. The reversal of 13975293 is 39257931.

13975293 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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: 39257931 = 313085977.

It is not a de Polignac number, because 13975293 - 22 = 13975289 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13975243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2329213 + ... + 2329218.

It is an arithmetic number, because the mean of its divisors is an integer number (4658432).

Almost surely, 213975293 is an apocalyptic number.

It is an amenable number.

13975293 is a deficient number, since it is larger than the sum of its proper divisors (4658435).

13975293 is an equidigital number, since it uses as much as digits as its factorization.

13975293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4658434.

The product of its digits is 51030, while the sum is 39.

The square root of 13975293 is about 3738.3543170759. The cubic root of 13975293 is about 240.8723634443.

The spelling of 13975293 in words is "thirteen million, nine hundred seventy-five thousand, two hundred ninety-three".

Divisors: 1 3 4658431 13975293