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530231280 = 243543191269
BaseRepresentation
bin11111100110101…
…010111111110000
31100221201112120120
4133212222333300
52041214400110
6124340410240
716065614535
oct3746527760
91327645516
10530231280
11252335677
121296a6980
1385b0b427
14505c4d8c
153183a870
hex1f9aaff0

530231280 has 160 divisors (see below), whose sum is σ = 1697034240. Its totient is φ = 136872960.

The previous prime is 530231279. The next prime is 530231327. The reversal of 530231280 is 82132035.

It is a super-2 number, since 2×5302312802 = 562290420580876800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 530231280.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 1970986 + ... + 1971254.

It is an arithmetic number, because the mean of its divisors is an integer number (10606464).

Almost surely, 2530231280 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 530231280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (848517120).

530231280 is an abundant number, since it is smaller than the sum of its proper divisors (1166802960).

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

530231280 is a wasteful number, since it uses less digits than its factorization.

530231280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 530231280 is about 23026.7513991879. The cubic root of 530231280 is about 809.3849316372.

The spelling of 530231280 in words is "five hundred thirty million, two hundred thirty-one thousand, two hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 43 48 60 80 86 120 129 172 191 215 240 258 269 344 382 430 516 538 573 645 688 764 807 860 955 1032 1076 1146 1290 1345 1528 1614 1720 1910 2064 2152 2292 2580 2690 2865 3056 3228 3440 3820 4035 4304 4584 5160 5380 5730 6456 7640 8070 8213 9168 10320 10760 11460 11567 12912 15280 16140 16426 21520 22920 23134 24639 32280 32852 34701 41065 45840 46268 49278 51379 57835 64560 65704 69402 82130 92536 98556 102758 115670 123195 131408 138804 154137 164260 173505 185072 197112 205516 231340 246390 256895 277608 308274 328520 347010 394224 411032 462680 492780 513790 555216 616548 657040 694020 770685 822064 925360 985560 1027580 1233096 1388040 1541370 1971120 2055160 2209297 2466192 2776080 3082740 4110320 4418594 6165480 6627891 8837188 11046485 12330960 13255782 17674376 22092970 26511564 33139455 35348752 44185940 53023128 66278910 88371880 106046256 132557820 176743760 265115640 530231280