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13028019 = 310614093
BaseRepresentation
bin110001101100…
…101010110011
3220111220002020
4301230222303
511313344034
61143122523
7215510364
oct61545263
926456066
1013028019
117399164
124443443
132911bb4
141a31b6b
151225249
hexc6cab3

13028019 has 8 divisors (see below), whose sum is σ = 17391312. Its totient is φ = 8675040.

The previous prime is 13028009. The next prime is 13028023. The reversal of 13028019 is 91082031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13028019 - 27 = 13027891 is a prime.

It is a super-2 number, since 2×130280192 = 339458558128722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13028019.

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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1137 + ... + 5229.

It is an arithmetic number, because the mean of its divisors is an integer number (2173914).

Almost surely, 213028019 is an apocalyptic number.

13028019 is a deficient number, since it is larger than the sum of its proper divisors (4363293).

13028019 is a wasteful number, since it uses less digits than its factorization.

13028019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5157.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 13028019 is about 3609.4347202852. The cubic root of 13028019 is about 235.3022758777.

The spelling of 13028019 in words is "thirteen million, twenty-eight thousand, nineteen".

Divisors: 1 3 1061 3183 4093 12279 4342673 13028019