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2130655580 = 225611746439
BaseRepresentation
bin111111011111111…
…0011100101011100
312111111012111222122
41332333303211130
513330421434310
6551231202112
7103541162564
oct17677634534
95444174878
102130655580
119a3777089
124b5676338
1327c562361
14162d89da4
15c70c0555
hex7eff395c

2130655580 has 24 divisors (see below), whose sum is σ = 4547729760. Its totient is φ = 838290240.

The previous prime is 2130655561. The next prime is 2130655589. The reversal of 2130655580 is 855560312.

It is a super-3 number, since 3×21306555803 (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2130655580.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130655589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 872000 + ... + 874439.

It is an arithmetic number, because the mean of its divisors is an integer number (189488740).

Almost surely, 22130655580 is an apocalyptic number.

2130655580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2130655580 is an abundant number, since it is smaller than the sum of its proper divisors (2417074180).

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

2130655580 is a wasteful number, since it uses less digits than its factorization.

2130655580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746509 (or 1746507 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 2130655580 is about 46159.0249030458. The cubic root of 2130655580 is about 1286.7803409580.

The spelling of 2130655580 in words is "two billion, one hundred thirty million, six hundred fifty-five thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 61 122 244 305 610 1220 1746439 3492878 6985756 8732195 17464390 34928780 106532779 213065558 426131116 532663895 1065327790 2130655580