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13041680 = 245163021
BaseRepresentation
bin110001110000…
…000000010000
3220112120211012
4301300000100
511314313210
61143310052
7215565251
oct61600020
926476735
1013041680
1173a8453
12444b328
132918192
141a36b28
151229305
hexc70010

13041680 has 20 divisors (see below), whose sum is σ = 30322092. Its totient is φ = 5216640.

The previous prime is 13041673. The next prime is 13041683. The reversal of 13041680 is 8614031.

13041680 is nontrivially palindromic in base 13.

It can be written as a sum of positive squares in 2 ways, for example, as 1317904 + 11723776 = 1148^2 + 3424^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13041683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81431 + ... + 81590.

Almost surely, 213041680 is an apocalyptic number.

13041680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13041680 is an abundant number, since it is smaller than the sum of its proper divisors (17280412).

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

13041680 is a wasteful number, since it uses less digits than its factorization.

13041680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163034 (or 163028 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 13041680 is about 3611.3266260476. The cubic root of 13041680 is about 235.3844920482.

The spelling of 13041680 in words is "thirteen million, forty-one thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 163021 326042 652084 815105 1304168 1630210 2608336 3260420 6520840 13041680