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252878230 = 251117271499
BaseRepresentation
bin11110001001010…
…01110110010110
3122121211112201101
433010221312112
51004214100410
641032020314
76160300213
oct1704516626
9577745641
10252878230
1111a81a180
127083169a
134050c7b7
1425828b0a
1517301d3a
hexf129d96

252878230 has 64 divisors (see below), whose sum is σ = 528768000. Its totient is φ = 86054400.

The previous prime is 252878221. The next prime is 252878237. The reversal of 252878230 is 32878252.

It is a self number, because there is not a number n which added to its sum of digits gives 252878230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252878237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 506521 + ... + 507019.

It is an arithmetic number, because the mean of its divisors is an integer number (8262000).

Almost surely, 2252878230 is an apocalyptic number.

252878230 is an abundant number, since it is smaller than the sum of its proper divisors (275889770).

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

252878230 is a wasteful number, since it uses less digits than its factorization.

252878230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 252878230 is about 15902.1454527369. The cubic root of 252878230 is about 632.3688678142.

The spelling of 252878230 in words is "two hundred fifty-two million, eight hundred seventy-eight thousand, two hundred thirty".

Divisors: 1 2 5 10 11 17 22 34 55 85 110 170 187 271 374 499 542 935 998 1355 1870 2495 2710 2981 4607 4990 5489 5962 8483 9214 10978 14905 16966 23035 27445 29810 42415 46070 50677 54890 84830 93313 101354 135229 186626 253385 270458 466565 506770 676145 933130 1352290 1487519 2298893 2975038 4597786 7437595 11494465 14875190 22988930 25287823 50575646 126439115 252878230