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238677768 = 233274431069
BaseRepresentation
bin11100011100111…
…10111100001000
3121122010002100100
432032132330020
5442100142033
635403405400
75625504360
oct1616367410
9548102310
10238677768
1111280015a
1267b23860
133a5aa064
14239ad9a0
1515e49513
hexe39ef08

238677768 has 96 divisors (see below), whose sum is σ = 741124800. Its totient is φ = 67976064.

The previous prime is 238677767. The next prime is 238677779. The reversal of 238677768 is 867776832.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (238677767) 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, 222738 + ... + 223806.

It is an arithmetic number, because the mean of its divisors is an integer number (7720050).

Almost surely, 2238677768 is an apocalyptic number.

238677768 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 238677768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370562400).

238677768 is an abundant number, since it is smaller than the sum of its proper divisors (502447032).

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

238677768 is a wasteful number, since it uses less digits than its factorization.

238677768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531 (or 1524 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 54.

The square root of 238677768 is about 15449.1995909173. The cubic root of 238677768 is about 620.3031538622.

The spelling of 238677768 in words is "two hundred thirty-eight million, six hundred seventy-seven thousand, seven hundred sixty-eight".

Divisors: 1 2 3 4 6 7 8 9 12 14 18 21 24 28 36 42 56 63 72 84 126 168 252 443 504 886 1069 1329 1772 2138 2658 3101 3207 3544 3987 4276 5316 6202 6414 7483 7974 8552 9303 9621 10632 12404 12828 14966 15948 18606 19242 22449 24808 25656 27909 29932 31896 37212 38484 44898 55818 59864 67347 74424 76968 89796 111636 134694 179592 223272 269388 473567 538776 947134 1420701 1894268 2841402 3314969 3788536 4262103 5682804 6629938 8524206 9944907 11365608 13259876 17048412 19889814 26519752 29834721 34096824 39779628 59669442 79559256 119338884 238677768