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13037680 = 245162971
BaseRepresentation
bin110001101111…
…000001110000
3220112101100001
4301233001300
511314201210
61143235344
7215550505
oct61570160
926471301
1013037680
1173a5447
124448b54
132916406
141a354ac
15122803a
hexc6f070

13037680 has 20 divisors (see below), whose sum is σ = 30312792. Its totient is φ = 5215040.

The previous prime is 13037677. The next prime is 13037681. The reversal of 13037680 is 8673031.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13037681) 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 3 ways as a sum of consecutive naturals, for example, 81406 + ... + 81565.

Almost surely, 213037680 is an apocalyptic number.

13037680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13037680 is an abundant number, since it is smaller than the sum of its proper divisors (17275112).

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

13037680 is a wasteful number, since it uses less digits than its factorization.

13037680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162984 (or 162978 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 13037680 is about 3610.7727704745. The cubic root of 13037680 is about 235.3604247439.

The spelling of 13037680 in words is "thirteen million, thirty-seven thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 162971 325942 651884 814855 1303768 1629710 2607536 3259420 6518840 13037680