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13253009 = 711215647
BaseRepresentation
bin110010100011…
…100110010001
3220221022201012
4302203212101
511343044014
61152020305
7220435340
oct62434621
926838635
1013253009
117532200
124531695
132990423
141a8db57
15126bc3e
hexca3991

13253009 has 12 divisors (see below), whose sum is σ = 16649472. Its totient is φ = 10326360.

The previous prime is 13253003. The next prime is 13253017. The reversal of 13253009 is 90035231.

It is a happy number.

It is not a de Polignac number, because 13253009 - 220 = 12204433 is a prime.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (13253003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6977 + ... + 8670.

It is an arithmetic number, because the mean of its divisors is an integer number (1387456).

Almost surely, 213253009 is an apocalyptic number.

It is an amenable number.

13253009 is a deficient number, since it is larger than the sum of its proper divisors (3396463).

13253009 is a wasteful number, since it uses less digits than its factorization.

13253009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15676 (or 15665 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 13253009 is about 3640.4682391143. The cubic root of 13253009 is about 236.6490857358.

It can be divided in two parts, 1325 and 3009, that added together give a palindrome (4334).

The spelling of 13253009 in words is "thirteen million, two hundred fifty-three thousand, nine".

Divisors: 1 7 11 77 121 847 15647 109529 172117 1204819 1893287 13253009