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13025247 = 3171272011
BaseRepresentation
bin110001101011…
…111111011111
3220111202021120
4301223333133
511313301442
61143102023
7215466324
oct61537737
926452246
1013025247
117397074
124441913
132910861
141a30b4b
1512244ec
hexc6bfdf

13025247 has 16 divisors (see below), whose sum is σ = 18542592. Its totient is φ = 8104320.

The previous prime is 13025231. The next prime is 13025267. The reversal of 13025247 is 74252031.

It is not a de Polignac number, because 13025247 - 24 = 13025231 is a prime.

It is a super-2 number, since 2×130252472 = 339314118822018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13025267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5472 + ... + 7482.

It is an arithmetic number, because the mean of its divisors is an integer number (1158912).

Almost surely, 213025247 is an apocalyptic number.

13025247 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13025247 is a deficient number, since it is larger than the sum of its proper divisors (5517345).

13025247 is a wasteful number, since it uses less digits than its factorization.

13025247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 13025247 is about 3609.0507062107. The cubic root of 13025247 is about 235.2855861012.

Adding to 13025247 its reverse (74252031), we get a palindrome (87277278).

The spelling of 13025247 in words is "thirteen million, twenty-five thousand, two hundred forty-seven".

Divisors: 1 3 17 51 127 381 2011 2159 6033 6477 34187 102561 255397 766191 4341749 13025247