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238824045 = 36565521
BaseRepresentation
bin11100011110000…
…10101001101101
3121122101112000000
432033002221231
5442114332140
635410454513
75626654005
oct1617025155
9548345000
10238824045
111128a0049
1267b94439
133a62b805
1423a0b005
1515e77a30
hexe3c2a6d

238824045 has 28 divisors (see below), whose sum is σ = 429693276. Its totient is φ = 127370880.

The previous prime is 238824043. The next prime is 238824071. The reversal of 238824045 is 540428832.

It can be written as a sum of positive squares in 2 ways, for example, as 111450249 + 127373796 = 10557^2 + 11286^2 .

It is not a de Polignac number, because 238824045 - 21 = 238824043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238824043) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 29116 + ... + 36405.

Almost surely, 2238824045 is an apocalyptic number.

It is an amenable number.

238824045 is a deficient number, since it is larger than the sum of its proper divisors (190869231).

238824045 is an frugal number, since it uses more digits than its factorization.

238824045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65544 (or 65529 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The square root of 238824045 is about 15453.9329945487. The cubic root of 238824045 is about 620.4298484642.

The spelling of 238824045 in words is "two hundred thirty-eight million, eight hundred twenty-four thousand, forty-five".

Divisors: 1 3 5 9 15 27 45 81 135 243 405 729 1215 3645 65521 196563 327605 589689 982815 1769067 2948445 5307201 8845335 15921603 26536005 47764809 79608015 238824045