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238669037240 = 23537172193703
BaseRepresentation
bin1101111001000111001…
…0000111111010111000
3211211001020220022022212
43132101302013322320
512402243233142430
6301350521434252
723146304225624
oct3362162077270
9754036808285
10238669037240
11922454a4217
123a30993b988
13196777154ba
14b7a19cc184
15631d1a1b95
hex3791c87eb8

238669037240 has 64 divisors (see below), whose sum is σ = 551845344960. Its totient is φ = 92832445440.

The previous prime is 238669037239. The next prime is 238669037251. The reversal of 238669037240 is 42730966832.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

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, 2500229 + ... + 2593931.

It is an arithmetic number, because the mean of its divisors is an integer number (8622583515).

Almost surely, 2238669037240 is an apocalyptic number.

238669037240 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 238669037240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275922672480).

238669037240 is an abundant number, since it is smaller than the sum of its proper divisors (313176307720).

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

238669037240 is a wasteful number, since it uses less digits than its factorization.

238669037240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95472 (or 95468 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 50.

The spelling of 238669037240 in words is "two hundred thirty-eight billion, six hundred sixty-nine million, thirty-seven thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 20 37 40 74 148 185 296 370 740 1480 1721 3442 6884 8605 13768 17210 34420 63677 68840 93703 127354 187406 254708 318385 374812 468515 509416 636770 749624 937030 1273540 1874060 2547080 3467011 3748120 6934022 13868044 17335055 27736088 34670110 69340220 138680440 161262863 322525726 645051452 806314315 1290102904 1612628630 3225257260 5966725931 6450514520 11933451862 23866903724 29833629655 47733807448 59667259310 119334518620 238669037240