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83055280 = 24571197139
BaseRepresentation
bin1001111001101…
…01001010110000
312210021122102111
410330311022300
5132230232110
612124055104
72025646450
oct474651260
9183248374
1083055280
1142978730
1223994494
131428cc49
14b05dd60
157458e8a
hex4f352b0

83055280 has 160 divisors (see below), whose sum is σ = 244984320. Its totient is φ = 25436160.

The previous prime is 83055253. The next prime is 83055281. The reversal of 83055280 is 8255038.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83055281) 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 31 ways as a sum of consecutive naturals, for example, 597451 + ... + 597589.

It is an arithmetic number, because the mean of its divisors is an integer number (1531152).

Almost surely, 283055280 is an apocalyptic number.

83055280 is a gapful number since it is divisible by the number (80) 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 83055280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122492160).

83055280 is an abundant number, since it is smaller than the sum of its proper divisors (161929040).

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

83055280 is a wasteful number, since it uses less digits than its factorization.

83055280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 83055280 is about 9113.4669582986. The cubic root of 83055280 is about 436.3038871264.

The spelling of 83055280 in words is "eighty-three million, fifty-five thousand, two hundred eighty".

Divisors: 1 2 4 5 7 8 10 11 14 16 20 22 28 35 40 44 55 56 70 77 80 88 97 110 112 139 140 154 176 194 220 278 280 308 385 388 440 485 556 560 616 679 695 770 776 880 970 973 1067 1112 1232 1358 1390 1529 1540 1552 1940 1946 2134 2224 2716 2780 3058 3080 3395 3880 3892 4268 4865 5335 5432 5560 6116 6160 6790 7469 7645 7760 7784 8536 9730 10670 10703 10864 11120 12232 13483 13580 14938 15290 15568 17072 19460 21340 21406 24464 26966 27160 29876 30580 37345 38920 42680 42812 53515 53932 54320 59752 61160 67415 74690 77840 85360 85624 94381 107030 107864 119504 122320 134830 148313 149380 171248 188762 214060 215728 269660 296626 298760 377524 428120 471905 539320 593252 597520 741565 755048 856240 943810 1038191 1078640 1186504 1483130 1510096 1887620 2076382 2373008 2966260 3775240 4152764 5190955 5932520 7550480 8305528 10381910 11865040 16611056 20763820 41527640 83055280