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13168580 = 2252772377
BaseRepresentation
bin110010001110…
…111111000100
3220210000220012
4302032333010
511332343310
61150125352
7216634235
oct62167704
926700805
1013168580
117484827
1244b0858
132960b79
141a6b08c
151251c05
hexc8efc4

13168580 has 24 divisors (see below), whose sum is σ = 27765528. Its totient is φ = 5246208.

The previous prime is 13168579. The next prime is 13168613. The reversal of 13168580 is 8586131.

It can be written as a sum of positive squares in 4 ways, for example, as 107584 + 13060996 = 328^2 + 3614^2 .

It is a super-2 number, since 2×131685802 = 346822998432800, which contains 22 as substring.

It is an unprimeable number.

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, 4352 + ... + 6728.

It is an arithmetic number, because the mean of its divisors is an integer number (1156897).

Almost surely, 213168580 is an apocalyptic number.

13168580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13168580 is an abundant number, since it is smaller than the sum of its proper divisors (14596948).

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

13168580 is a wasteful number, since it uses less digits than its factorization.

13168580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663 (or 2661 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 13168580 is about 3628.8538135340. The cubic root of 13168580 is about 236.1454862780.

The spelling of 13168580 in words is "thirteen million, one hundred sixty-eight thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 277 554 1108 1385 2377 2770 4754 5540 9508 11885 23770 47540 658429 1316858 2633716 3292145 6584290 13168580