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13718745 = 3251779227
BaseRepresentation
bin110100010101…
…010011011001
3221210222120200
4310111103121
512002444440
61210012413
7224415225
oct64252331
927728520
1013718745
117820107
124717109
132ac4401
141b71785
15130ec30
hexd154d9

13718745 has 48 divisors (see below), whose sum is σ = 25608960. Its totient is φ = 6769152.

The previous prime is 13718743. The next prime is 13718753. The reversal of 13718745 is 54781731.

13718745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13718745 - 21 = 13718743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13718743) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60322 + ... + 60548.

It is an arithmetic number, because the mean of its divisors is an integer number (533520).

Almost surely, 213718745 is an apocalyptic number.

13718745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13718745 is a deficient number, since it is larger than the sum of its proper divisors (11890215).

13718745 is a wasteful number, since it uses less digits than its factorization.

13718745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 331 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 13718745 is about 3703.8824225399. The cubic root of 13718745 is about 239.3893329250.

The spelling of 13718745 in words is "thirteen million, seven hundred eighteen thousand, seven hundred forty-five".

Divisors: 1 3 5 9 15 17 45 51 79 85 153 227 237 255 395 681 711 765 1135 1185 1343 2043 3405 3555 3859 4029 6715 10215 11577 12087 17933 19295 20145 34731 53799 57885 60435 89665 161397 173655 268995 304861 806985 914583 1524305 2743749 4572915 13718745