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238078008 = 233371011559
BaseRepresentation
bin11100011000011…
…00100000111000
3121120222121122000
432030030200320
5441421444013
635342501000
75620425660
oct1614144070
9546877560
10238078008
11112430593
1267894760
133a42a07c
14238951a0
1515d7b973
hexe30c838

238078008 has 128 divisors (see below), whose sum is σ = 763776000. Its totient is φ = 67305600.

The previous prime is 238078003. The next prime is 238078019. The reversal of 238078008 is 800870832.

It is a super-2 number, since 2×2380780082 = 113362275786496128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238078003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151933 + ... + 153491.

It is an arithmetic number, because the mean of its divisors is an integer number (5967000).

Almost surely, 2238078008 is an apocalyptic number.

238078008 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238078008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381888000).

238078008 is an abundant number, since it is smaller than the sum of its proper divisors (525697992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

238078008 is a wasteful number, since it uses less digits than its factorization.

238078008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682 (or 1672 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 238078008 is about 15429.7766672107. The cubic root of 238078008 is about 619.7831430282.

The spelling of 238078008 in words is "two hundred thirty-eight million, seventy-eight thousand, eight".

Divisors: 1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 36 42 54 56 63 72 84 101 108 126 168 189 202 216 252 303 378 404 504 606 707 756 808 909 1212 1414 1512 1559 1818 2121 2424 2727 2828 3118 3636 4242 4677 5454 5656 6236 6363 7272 8484 9354 10908 10913 12472 12726 14031 16968 18708 19089 21816 21826 25452 28062 32739 37416 38178 42093 43652 50904 56124 65478 76356 84186 87304 98217 112248 130956 152712 157459 168372 196434 261912 294651 314918 336744 392868 472377 589302 629836 785736 944754 1102213 1178604 1259672 1417131 1889508 2204426 2357208 2834262 3306639 3779016 4251393 4408852 5668524 6613278 8502786 8817704 9919917 11337048 13226556 17005572 19839834 26453112 29759751 34011144 39679668 59519502 79359336 119039004 238078008