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468972140 = 2257213131281
BaseRepresentation
bin11011111100111…
…111001001101100
31012200110020211112
4123330333021230
51430024102030
6114311411152
714423124500
oct3374771154
91180406745
10468972140
112207a478a
12111083ab8
1376210310
14463da300
152b289a95
hex1bf3f26c

468972140 has 144 divisors (see below), whose sum is σ = 1247599584. Its totient is φ = 146764800.

The previous prime is 468972131. The next prime is 468972169. The reversal of 468972140 is 41279864.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1668800 + ... + 1669080.

It is an arithmetic number, because the mean of its divisors is an integer number (8663886).

Almost surely, 2468972140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 468972140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (623799792).

468972140 is an abundant number, since it is smaller than the sum of its proper divisors (778627444).

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

468972140 is a wasteful number, since it uses less digits than its factorization.

468972140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 468972140 is about 21655.7645905195. The cubic root of 468972140 is about 776.9308165548.

The spelling of 468972140 in words is "four hundred sixty-eight million, nine hundred seventy-two thousand, one hundred forty".

Divisors: 1 2 4 5 7 10 13 14 20 26 28 35 49 52 65 70 91 98 130 131 140 182 196 245 260 262 281 364 455 490 524 562 637 655 910 917 980 1124 1274 1310 1405 1703 1820 1834 1967 2548 2620 2810 3185 3406 3653 3668 3934 4585 5620 6370 6419 6812 7306 7868 8515 9170 9835 11921 12740 12838 13769 14612 17030 18265 18340 19670 23842 25571 25676 27538 32095 34060 36530 36811 39340 47684 51142 55076 59605 64190 68845 73060 73622 83447 102284 119210 127855 128380 137690 147244 166894 178997 184055 238420 255710 257677 275380 333788 357994 368110 417235 478543 511420 515354 715988 736220 834470 894985 957086 1030708 1288385 1668940 1789970 1803739 1914172 2392715 2576770 3349801 3579940 3607478 4785430 5153540 6699602 7214956 9018695 9570860 13399204 16749005 18037390 23448607 33498010 36074780 46897214 66996020 93794428 117243035 234486070 468972140