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2118000980 = 225265739857
BaseRepresentation
bin111111000111110…
…0010000101010100
312110121101121010202
41332033202011110
513314202012410
6550100040032
7103325465654
oct17617420524
95417347122
102118000980
11997613537
124b1393018
13279a51424
14161414364
15c5e20ca5
hex7e3e2154

2118000980 has 24 divisors (see below), whose sum is σ = 4449587688. Its totient is φ = 846860288.

The previous prime is 2118000967. The next prime is 2118001013. The reversal of 2118000980 is 890008112.

It can be written as a sum of positive squares in 4 ways, for example, as 902641936 + 1215359044 = 30044^2 + 34862^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33212 + ... + 73068.

It is an arithmetic number, because the mean of its divisors is an integer number (185399487).

Almost surely, 22118000980 is an apocalyptic number.

2118000980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2118000980 is an abundant number, since it is smaller than the sum of its proper divisors (2331586708).

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

2118000980 is a wasteful number, since it uses less digits than its factorization.

2118000980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42523 (or 42521 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 2118000980 is about 46021.7446431575. The cubic root of 2118000980 is about 1284.2277564621.

The spelling of 2118000980 in words is "two billion, one hundred eighteen million, nine hundred eighty", and thus it is an aban number.

Divisors: 1 2 4 5 10 20 2657 5314 10628 13285 26570 39857 53140 79714 159428 199285 398570 797140 105900049 211800098 423600196 529500245 1059000490 2118000980