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206141980 = 22511937009
BaseRepresentation
bin11000100100101…
…11101000011100
3112100220002122011
430102113220130
5410233020410
632242201004
75052115012
oct1422275034
9470802564
10206141980
11a63a8580
1259053164
1333927b05
141d5408b2
151316e18a
hexc497a1c

206141980 has 24 divisors (see below), whose sum is σ = 472253040. Its totient is φ = 74960640.

The previous prime is 206141977. The next prime is 206141987. The reversal of 206141980 is 89141602.

It is a happy number.

206141980 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206141987) 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 7 ways as a sum of consecutive naturals, for example, 468285 + ... + 468724.

It is an arithmetic number, because the mean of its divisors is an integer number (19677210).

Almost surely, 2206141980 is an apocalyptic number.

206141980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206141980 is an abundant number, since it is smaller than the sum of its proper divisors (266111060).

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

206141980 is a wasteful number, since it uses less digits than its factorization.

206141980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937029 (or 937027 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 206141980 is about 14357.6453501262. The cubic root of 206141980 is about 590.7297109311.

The spelling of 206141980 in words is "two hundred six million, one hundred forty-one thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 937009 1874018 3748036 4685045 9370090 10307099 18740180 20614198 41228396 51535495 103070990 206141980