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252839880 = 23345731069
BaseRepresentation
bin11110001001000…
…00011111001000
3122121202121010000
433010200133020
51004211334010
641031123000
76160050336
oct1704403710
9577677100
10252839880
1111a7a3387
1270813460
13404c81c7
1425818b56
15172e57c0
hexf1207c8

252839880 has 160 divisors (see below), whose sum is σ = 862270200. Its totient is φ = 66438144.

The previous prime is 252839857. The next prime is 252839887. The reversal of 252839880 is 88938252.

252839880 is a `hidden beast` number, since 252 + 8 + 398 + 8 + 0 = 666.

252839880 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 205807716 + 47032164 = 14346^2 + 6858^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252839887) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 235986 + ... + 237054.

Almost surely, 2252839880 is an apocalyptic number.

252839880 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 252839880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (431135100).

252839880 is an abundant number, since it is smaller than the sum of its proper divisors (609430320).

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

252839880 is a wasteful number, since it uses less digits than its factorization.

252839880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165 (or 1152 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 252839880 is about 15900.9395948793. The cubic root of 252839880 is about 632.3368991046.

The spelling of 252839880 in words is "two hundred fifty-two million, eight hundred thirty-nine thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 30 36 40 45 54 60 72 73 81 90 108 120 135 146 162 180 216 219 270 292 324 360 365 405 438 540 584 648 657 730 810 876 1069 1080 1095 1314 1460 1620 1752 1971 2138 2190 2628 2920 3207 3240 3285 3942 4276 4380 5256 5345 5913 6414 6570 7884 8552 8760 9621 9855 10690 11826 12828 13140 15768 16035 19242 19710 21380 23652 25656 26280 28863 29565 32070 38484 39420 42760 47304 48105 57726 59130 64140 76968 78037 78840 86589 96210 115452 118260 128280 144315 156074 173178 192420 230904 234111 236520 288630 312148 346356 384840 390185 432945 468222 577260 624296 692712 702333 780370 865890 936444 1154520 1170555 1404666 1560740 1731780 1872888 2106999 2341110 2809332 3121480 3463560 3511665 4213998 4682220 5618664 6320997 7023330 8427996 9364440 10534995 12641994 14046660 16855992 21069990 25283988 28093320 31604985 42139980 50567976 63209970 84279960 126419940 252839880