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13000080 = 243554167
BaseRepresentation
bin110001100101…
…110110010000
3220110110202110
4301211312100
511312000310
61142345320
7215333052
oct61456620
926413673
1013000080
11737a175
12442b240
132902272
141a258d2
15121bd20
hexc65d90

13000080 has 40 divisors (see below), whose sum is σ = 40300992. Its totient is φ = 3466624.

The previous prime is 13000069. The next prime is 13000081. The reversal of 13000080 is 8000031.

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

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (13000081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26844 + ... + 27323.

Almost surely, 213000080 is an apocalyptic number.

13000080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13000080 is an abundant number, since it is smaller than the sum of its proper divisors (27300912).

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

13000080 is a wasteful number, since it uses less digits than its factorization.

13000080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54183 (or 54177 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 13000080 is about 3605.5623694508. The cubic root of 13000080 is about 235.1339510962.

The spelling of 13000080 in words is "thirteen million, eighty", and thus it is an aban number and an uban number.

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 54167 108334 162501 216668 270835 325002 433336 541670 650004 812505 866672 1083340 1300008 1625010 2166680 2600016 3250020 4333360 6500040 13000080