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13006780 = 22547101137
BaseRepresentation
bin110001100111…
…011110111100
3220110210221121
4301213132330
511312204110
61142440324
7215361433
oct61473674
926423847
1013006780
117384206
1244330a4
132905327
141a2811a
15121dcda
hexc677bc

13006780 has 48 divisors (see below), whose sum is σ = 28377216. Its totient is φ = 5004800.

The previous prime is 13006739. The next prime is 13006793. The reversal of 13006780 is 8760031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94872 + ... + 95008.

It is an arithmetic number, because the mean of its divisors is an integer number (591192).

Almost surely, 213006780 is an apocalyptic number.

13006780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13006780 is an abundant number, since it is smaller than the sum of its proper divisors (15370436).

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

13006780 is a wasteful number, since it uses less digits than its factorization.

13006780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 13006780 is about 3606.4913697387. The cubic root of 13006780 is about 235.1743387170.

The spelling of 13006780 in words is "thirteen million, six thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 47 94 101 137 188 202 235 274 404 470 505 548 685 940 1010 1370 2020 2740 4747 6439 9494 12878 13837 18988 23735 25756 27674 32195 47470 55348 64390 69185 94940 128780 138370 276740 650339 1300678 2601356 3251695 6503390 13006780