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227640141 = 32531313643
BaseRepresentation
bin11011001000110…
…00001101001101
3120212100022120100
431210120031031
5431233441031
634331041313
75432623611
oct1544301515
9525308510
10227640141
11107551453
12642a0239
1338214111
1422339341
1514eb8de6
hexd91834d

227640141 has 24 divisors (see below), whose sum is σ = 337667616. Its totient is φ = 147719520.

The previous prime is 227640139. The next prime is 227640143. The reversal of 227640141 is 141046722.

227640141 is a `hidden beast` number, since 2 + 2 + 7 + 640 + 14 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (227640139) and next prime (227640143).

It is not a de Polignac number, because 227640141 - 21 = 227640139 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 (227640143) 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 23 ways as a sum of consecutive naturals, for example, 60666 + ... + 64308.

It is an arithmetic number, because the mean of its divisors is an integer number (14069484).

Almost surely, 2227640141 is an apocalyptic number.

It is an amenable number.

227640141 is a deficient number, since it is larger than the sum of its proper divisors (110027475).

227640141 is a wasteful number, since it uses less digits than its factorization.

227640141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3833 (or 3830 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 227640141 is about 15087.7480427001. The cubic root of 227640141 is about 610.5898987641.

Adding to 227640141 its reverse (141046722), we get a palindrome (368686863).

The spelling of 227640141 in words is "two hundred twenty-seven million, six hundred forty thousand, one hundred forty-one".

Divisors: 1 3 9 53 131 159 393 477 1179 3643 6943 10929 20829 32787 62487 193079 477233 579237 1431699 1737711 4295097 25293349 75880047 227640141