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13985853 = 37665993
BaseRepresentation
bin110101010110…
…100000111101
3222022112222120
4311112200331
512040021403
61215433153
7226610040
oct65264075
928275876
1013985853
117992862
1248257b9
132b88b6b
141c00c57
151363e53
hexd5683d

13985853 has 8 divisors (see below), whose sum is σ = 21311808. Its totient is φ = 7991904.

The previous prime is 13985833. The next prime is 13985857. The reversal of 13985853 is 35858931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13985853 - 28 = 13985597 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13985857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332976 + ... + 333017.

It is an arithmetic number, because the mean of its divisors is an integer number (2663976).

Almost surely, 213985853 is an apocalyptic number.

It is an amenable number.

13985853 is a deficient number, since it is larger than the sum of its proper divisors (7325955).

13985853 is an equidigital number, since it uses as much as digits as its factorization.

13985853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666003.

The product of its digits is 129600, while the sum is 42.

The square root of 13985853 is about 3739.7664365572. The cubic root of 13985853 is about 240.9330174322.

The spelling of 13985853 in words is "thirteen million, nine hundred eighty-five thousand, eight hundred fifty-three".

Divisors: 1 3 7 21 665993 1997979 4661951 13985853