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20708118 = 23210191129
BaseRepresentation
bin100111011111…
…1101100010110
31102222002012100
41032333230112
520300124433
62015502530
7341005344
oct116775426
942862170
1020708118
1110764352
126b27a46
1343a0832
142a70994
151c40b13
hex13bfb16

20708118 has 24 divisors (see below), whose sum is σ = 44951400. Its totient is φ = 6889824.

The previous prime is 20708101. The next prime is 20708137. The reversal of 20708118 is 81180702.

It is a super-2 number, since 2×207081182 = 857652302203848, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20708091 and 20708100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17778 + ... + 18906.

It is an arithmetic number, because the mean of its divisors is an integer number (1872975).

Almost surely, 220708118 is an apocalyptic number.

20708118 is an abundant number, since it is smaller than the sum of its proper divisors (24243282).

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

20708118 is a wasteful number, since it uses less digits than its factorization.

20708118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156 (or 2153 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 20708118 is about 4550.6173207599. The cubic root of 20708118 is about 274.6082267060.

The spelling of 20708118 in words is "twenty million, seven hundred eight thousand, one hundred eighteen".

Divisors: 1 2 3 6 9 18 1019 1129 2038 2258 3057 3387 6114 6774 9171 10161 18342 20322 1150451 2300902 3451353 6902706 10354059 20708118