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252240885 = 34513232083
BaseRepresentation
bin11110000100011…
…10001111110101
3122120122011110000
433002032033311
51004033202020
641010221513
76152004111
oct1702161765
9576564400
10252240885
1111a424346
1270584899
1340348680
1425700741
1517228090
hexf08e3f5

252240885 has 80 divisors (see below), whose sum is σ = 508362624. Its totient is φ = 118723968.

The previous prime is 252240853. The next prime is 252240913. The reversal of 252240885 is 588042252.

It is not a de Polignac number, because 252240885 - 25 = 252240853 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 120054 + ... + 122136.

Almost surely, 2252240885 is an apocalyptic number.

It is an amenable number.

252240885 is an abundant number, since it is smaller than the sum of its proper divisors (256121739).

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

252240885 is a wasteful number, since it uses less digits than its factorization.

252240885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136 (or 2127 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The square root of 252240885 is about 15882.0932184646. The cubic root of 252240885 is about 631.8371544398.

The spelling of 252240885 in words is "two hundred fifty-two million, two hundred forty thousand, eight hundred eighty-five".

Divisors: 1 3 5 9 13 15 23 27 39 45 65 69 81 115 117 135 195 207 299 345 351 405 585 621 897 1035 1053 1495 1755 1863 2083 2691 3105 4485 5265 6249 8073 9315 10415 13455 18747 24219 27079 31245 40365 47909 56241 81237 93735 121095 135395 143727 168723 239545 243711 281205 406185 431181 622817 718635 731133 843615 1218555 1293543 1868451 2155905 2193399 3114085 3655665 3880629 5605353 6467715 9342255 10966995 16816059 19403145 28026765 50448177 84080295 252240885