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238324280 = 23531712707
BaseRepresentation
bin11100011010010…
…00101000111000
3121121110010110012
432031020220320
5442002334110
635352041052
75622502655
oct1615105070
9547403405
10238324280
11112589617
1267993188
133a4b51ac
142391ac2c
1515dc9905
hexe348a38

238324280 has 64 divisors (see below), whose sum is σ = 561530880. Its totient is φ = 90921600.

The previous prime is 238324253. The next prime is 238324297. The reversal of 238324280 is 82423832.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86687 + ... + 89393.

It is an arithmetic number, because the mean of its divisors is an integer number (8773920).

Almost surely, 2238324280 is an apocalyptic number.

238324280 is a gapful number since it is divisible by the number (20) 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 238324280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280765440).

238324280 is an abundant number, since it is smaller than the sum of its proper divisors (323206600).

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

238324280 is a wasteful number, since it uses less digits than its factorization.

238324280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820 (or 2816 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 238324280 is about 15437.7550181365. The cubic root of 238324280 is about 619.9967741768.

The spelling of 238324280 in words is "two hundred thirty-eight million, three hundred twenty-four thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 31 40 62 71 124 142 155 248 284 310 355 568 620 710 1240 1420 2201 2707 2840 4402 5414 8804 10828 11005 13535 17608 21656 22010 27070 44020 54140 83917 88040 108280 167834 192197 335668 384394 419585 671336 768788 839170 960985 1537576 1678340 1921970 3356680 3843940 5958107 7687880 11916214 23832428 29790535 47664856 59581070 119162140 238324280