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13028008 = 237232643
BaseRepresentation
bin110001101100…
…101010101000
3220111220001211
4301230222220
511313344013
61143122504
7215510350
oct61545250
926456054
1013028008
117399154
124443434
132911ba6
141a31b60
15122523d
hexc6caa8

13028008 has 16 divisors (see below), whose sum is σ = 27917280. Its totient is φ = 5583408.

The previous prime is 13027997. The next prime is 13028009. The reversal of 13028008 is 80082031.

It is a self number, because there is not a number n which added to its sum of digits gives 13028008.

It is not an unprimeable number, because it can be changed into a prime (13028009) 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 3 ways as a sum of consecutive naturals, for example, 116266 + ... + 116377.

It is an arithmetic number, because the mean of its divisors is an integer number (1744830).

Almost surely, 213028008 is an apocalyptic number.

It is an amenable number.

13028008 is an abundant number, since it is smaller than the sum of its proper divisors (14889272).

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

13028008 is a wasteful number, since it uses less digits than its factorization.

13028008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232656 (or 232652 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 13028008 is about 3609.4331965005. The cubic root of 13028008 is about 235.3022096531.

The spelling of 13028008 in words is "thirteen million, twenty-eight thousand, eight".

Divisors: 1 2 4 7 8 14 28 56 232643 465286 930572 1628501 1861144 3257002 6514004 13028008