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13039471 = 127102673
BaseRepresentation
bin110001101111…
…011101101111
3220112110210101
4301233131233
511314230341
61143251531
7215555644
oct61573557
926473711
1013039471
1173a6825
124449ba7
132917183
141a35dcb
151228831
hexc6f76f

13039471 has 4 divisors (see below), whose sum is σ = 13142272. Its totient is φ = 12936672.

The previous prime is 13039441. The next prime is 13039483. The reversal of 13039471 is 17493031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17493031 = 61286771.

It is a cyclic number.

It is not a de Polignac number, because 13039471 - 219 = 12515183 is a prime.

It is a super-3 number, since 3×130394713 (a number of 22 digits) contains 333 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 (13039441) 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, 51210 + ... + 51463.

It is an arithmetic number, because the mean of its divisors is an integer number (3285568).

Almost surely, 213039471 is an apocalyptic number.

13039471 is a deficient number, since it is larger than the sum of its proper divisors (102801).

13039471 is a wasteful number, since it uses less digits than its factorization.

13039471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102800.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 13039471 is about 3611.0207698101. The cubic root of 13039471 is about 235.3712014880.

It can be divided in two parts, 130 and 39471, that added together give a square (39601 = 1992).

The spelling of 13039471 in words is "thirteen million, thirty-nine thousand, four hundred seventy-one".

Divisors: 1 127 102673 13039471