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13144080 = 243554767
BaseRepresentation
bin110010001001…
…000000010000
3220201210021210
4302021000100
511331102310
61145420120
7216502635
oct62110020
926653253
1013144080
117468384
12449a640
132952981
141a6218c
151249820
hexc89010

13144080 has 40 divisors (see below), whose sum is σ = 40747392. Its totient is φ = 3505024.

The previous prime is 13144073. The next prime is 13144091. The reversal of 13144080 is 8044131.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27144 + ... + 27623.

Almost surely, 213144080 is an apocalyptic number.

13144080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13144080 is an abundant number, since it is smaller than the sum of its proper divisors (27603312).

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

13144080 is a wasteful number, since it uses less digits than its factorization.

13144080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54783 (or 54777 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 13144080 is about 3625.4765204039. The cubic root of 13144080 is about 235.9989466581.

The spelling of 13144080 in words is "thirteen million, one hundred forty-four thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 54767 109534 164301 219068 273835 328602 438136 547670 657204 821505 876272 1095340 1314408 1643010 2190680 2628816 3286020 4381360 6572040 13144080