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14202981 = 3213233521
BaseRepresentation
bin110110001011…
…100001100101
3222201120211100
4312023201211
512113443411
61224230313
7231503052
oct66134145
928646740
1014202981
118020a01
12490b399
132c33940
141c5a029
1513a8456
hexd8b865

14202981 has 24 divisors (see below), whose sum is σ = 22230936. Its totient is φ = 8686080.

The previous prime is 14202971. The next prime is 14202997. The reversal of 14202981 is 18920241.

14202981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 72900 + 14130081 = 270^2 + 3759^2 .

It is not a de Polignac number, because 14202981 - 26 = 14202917 is a prime.

It is a super-2 number, since 2×142029812 = 403449338572722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14202901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27001 + ... + 27521.

It is an arithmetic number, because the mean of its divisors is an integer number (926289).

Almost surely, 214202981 is an apocalyptic number.

It is an amenable number.

14202981 is a deficient number, since it is larger than the sum of its proper divisors (8027955).

14202981 is a wasteful number, since it uses less digits than its factorization.

14202981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773 (or 770 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 14202981 is about 3768.6842531579. The cubic root of 14202981 is about 242.1734350847.

The spelling of 14202981 in words is "fourteen million, two hundred two thousand, nine hundred eighty-one".

Divisors: 1 3 9 13 39 117 233 521 699 1563 2097 3029 4689 6773 9087 20319 27261 60957 121393 364179 1092537 1578109 4734327 14202981