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206020460 = 22510301023
BaseRepresentation
bin11000100011110…
…01111101101100
3112100122220221102
430101321331230
5410220123320
632235422232
75051100512
oct1421717554
9470586842
10206020460
11a6325248
1258bb4978
13338b46c9
141d50c4b2
1513148175
hexc479f6c

206020460 has 12 divisors (see below), whose sum is σ = 432643008. Its totient is φ = 82408176.

The previous prime is 206020459. The next prime is 206020471. The reversal of 206020460 is 64020602.

It is a super-2 number, since 2×2060204602 = 84888859877223200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 10301023 = 206020460 / (2 + 0 + 6 + 0 + 2 + 0 + 4 + 6 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5150492 + ... + 5150531.

It is an arithmetic number, because the mean of its divisors is an integer number (36053584).

Almost surely, 2206020460 is an apocalyptic number.

206020460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206020460 is an abundant number, since it is smaller than the sum of its proper divisors (226622548).

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

206020460 is a wasteful number, since it uses less digits than its factorization.

206020460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10301032 (or 10301030 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 206020460 is about 14353.4128345840. The cubic root of 206020460 is about 590.6136103922.

The spelling of 206020460 in words is "two hundred six million, twenty thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 10301023 20602046 41204092 51505115 103010230 206020460