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537205680 = 243251167829
BaseRepresentation
bin100000000001010…
…001101110110000
31101102211212122200
4200001101232300
52100011040210
6125150103200
716212113214
oct4001215660
91342755580
10537205680
11256269640
1212baaab00
13873b0aab
14514bc944
15322670c0
hex20051bb0

537205680 has 120 divisors (see below), whose sum is σ = 1968155280. Its totient is φ = 130229760.

The previous prime is 537205663. The next prime is 537205681. The reversal of 537205680 is 86502735.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (537205681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25995 + ... + 41834.

It is an arithmetic number, because the mean of its divisors is an integer number (16401294).

Almost surely, 2537205680 is an apocalyptic number.

It is an amenable number.

537205680 is an abundant number, since it is smaller than the sum of its proper divisors (1430949600).

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

537205680 is a wasteful number, since it uses less digits than its factorization.

537205680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67859 (or 67850 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 537205680 is about 23177.6979012153. The cubic root of 537205680 is about 812.9182345387.

The spelling of 537205680 in words is "five hundred thirty-seven million, two hundred five thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 30 33 36 40 44 45 48 55 60 66 72 80 88 90 99 110 120 132 144 165 176 180 198 220 240 264 330 360 396 440 495 528 660 720 792 880 990 1320 1584 1980 2640 3960 7920 67829 135658 203487 271316 339145 406974 542632 610461 678290 746119 813948 1017435 1085264 1220922 1356580 1492238 1627896 2034870 2238357 2441844 2713160 2984476 3052305 3255792 3730595 4069740 4476714 4883688 5426320 5968952 6104610 6715071 7461190 8139480 8953428 9767376 11191785 11937904 12209220 13430142 14922380 16278960 17906856 22383570 24418440 26860284 29844760 33575355 35813712 44767140 48836880 53720568 59689520 67150710 89534280 107441136 134301420 179068560 268602840 537205680