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13169680 = 245164621
BaseRepresentation
bin110010001111…
…010000010000
3220210002101221
4302033100100
511332412210
61150134424
7216640366
oct62172020
926702357
1013169680
117485637
1244b1414
132961514
141a6b636
1512521da
hexc8f410

13169680 has 20 divisors (see below), whose sum is σ = 30619692. Its totient is φ = 5267840.

The previous prime is 13169677. The next prime is 13169749. The reversal of 13169680 is 8696131.

It can be written as a sum of positive squares in 2 ways, for example, as 6697744 + 6471936 = 2588^2 + 2544^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82231 + ... + 82390.

Almost surely, 213169680 is an apocalyptic number.

13169680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13169680 is an abundant number, since it is smaller than the sum of its proper divisors (17450012).

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

13169680 is a wasteful number, since it uses less digits than its factorization.

13169680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164634 (or 164628 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 13169680 is about 3629.0053733771. The cubic root of 13169680 is about 236.1520613428.

The spelling of 13169680 in words is "thirteen million, one hundred sixty-nine thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 164621 329242 658484 823105 1316968 1646210 2633936 3292420 6584840 13169680