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238875885 = 3451937839
BaseRepresentation
bin11100011110011…
…11010011101101
3121122111011010000
432033033103231
5442123012020
635411534513
75630261103
oct1617172355
9548434100
10238875885
11112925a96
1267bba439
133a6492a1
1423a21c73
1515e88090
hexe3cf4ed

238875885 has 80 divisors (see below), whose sum is σ = 463478400. Its totient is φ = 117293184.

The previous prime is 238875883. The next prime is 238875887. The reversal of 238875885 is 588578832.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (238875883) and next prime (238875887).

It is not a de Polignac number, because 238875885 - 21 = 238875883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238875883) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 284296 + ... + 285134.

It is an arithmetic number, because the mean of its divisors is an integer number (5793480).

Almost surely, 2238875885 is an apocalyptic number.

It is an amenable number.

238875885 is a deficient number, since it is larger than the sum of its proper divisors (224602515).

238875885 is a wasteful number, since it uses less digits than its factorization.

238875885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912 (or 903 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 54.

The square root of 238875885 is about 15455.6101464808. The cubic root of 238875885 is about 620.4747361227.

The spelling of 238875885 in words is "two hundred thirty-eight million, eight hundred seventy-five thousand, eight hundred eighty-five".

Divisors: 1 3 5 9 15 19 27 37 45 57 81 95 111 135 171 185 285 333 405 513 555 703 839 855 999 1539 1665 2109 2517 2565 2997 3515 4195 4995 6327 7551 7695 10545 12585 14985 15941 18981 22653 31043 31635 37755 47823 56943 67959 79705 93129 94905 113265 143469 155215 239115 279387 284715 339795 430407 465645 589817 717345 838161 1291221 1396935 1769451 2152035 2514483 2949085 4190805 5308353 6456105 8847255 12572415 15925059 26541765 47775177 79625295 238875885