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13268008 = 23131131129
BaseRepresentation
bin110010100111…
…010000101000
3220222002021201
4302213100220
511344034013
61152213544
7220530145
oct62472050
926862251
1013268008
1175424a6
12453a2b4
1329971c0
141a953cc
1512713dd
hexca7428

13268008 has 32 divisors (see below), whose sum is σ = 27052200. Its totient is φ = 6064128.

The previous prime is 13267999. The next prime is 13268009. The reversal of 13268008 is 80086231.

It can be written as a sum of positive squares in 4 ways, for example, as 2125764 + 11142244 = 1458^2 + 3338^2 .

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13268009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11188 + ... + 12316.

Almost surely, 213268008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13268008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13526100).

13268008 is an abundant number, since it is smaller than the sum of its proper divisors (13784192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13268008 is a wasteful number, since it uses less digits than its factorization.

13268008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261 (or 1257 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 13268008 is about 3642.5276937863. The cubic root of 13268008 is about 236.7383273925.

The spelling of 13268008 in words is "thirteen million, two hundred sixty-eight thousand, eight".

Divisors: 1 2 4 8 13 26 52 104 113 226 452 904 1129 1469 2258 2938 4516 5876 9032 11752 14677 29354 58708 117416 127577 255154 510308 1020616 1658501 3317002 6634004 13268008