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252913360 = 2457716361
BaseRepresentation
bin11110001001100…
…10011011010000
3122121220022220111
433010302123100
51004221211420
641032451104
76160504510
oct1704623320
9577808814
10252913360
1111a843607
1270849a94
134052279b
1425837840
151730c45a
hexf1326d0

252913360 has 80 divisors (see below), whose sum is σ = 681599232. Its totient is φ = 85478400.

The previous prime is 252913357. The next prime is 252913361. The reversal of 252913360 is 63319252.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252913361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36580 + ... + 42940.

Almost surely, 2252913360 is an apocalyptic number.

252913360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

252913360 is the 7952-nd decagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252913360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340799616).

252913360 is an abundant number, since it is smaller than the sum of its proper divisors (428685872).

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

252913360 is a wasteful number, since it uses less digits than its factorization.

252913360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6452 (or 6446 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 252913360 is about 15903.2499823149. The cubic root of 252913360 is about 632.3981494830.

The spelling of 252913360 in words is "two hundred fifty-two million, nine hundred thirteen thousand, three hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 35 40 56 70 71 80 112 140 142 280 284 355 497 560 568 710 994 1136 1420 1988 2485 2840 3976 4970 5680 6361 7952 9940 12722 19880 25444 31805 39760 44527 50888 63610 89054 101776 127220 178108 222635 254440 356216 445270 451631 508880 712432 890540 903262 1781080 1806524 2258155 3161417 3562160 3613048 4516310 6322834 7226096 9032620 12645668 15807085 18065240 25291336 31614170 36130480 50582672 63228340 126456680 252913360