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206241481 = 316652951
BaseRepresentation
bin11000100101011…
…11111011001001
3112101002011010101
430102233323021
5410244211411
632244245401
75053011055
oct1422577311
9471064111
10206241481
11a6466306
12590a0861
13339611a4
141d568c65
151318d8c1
hexc4afec9

206241481 has 4 divisors (see below), whose sum is σ = 212894464. Its totient is φ = 199588500.

The previous prime is 206241463. The next prime is 206241487. The reversal of 206241481 is 184142602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 206241481 - 215 = 206208713 is a prime.

It is a super-2 number, since 2×2062414812 = 85071096970146722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206241487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3326445 + ... + 3326506.

It is an arithmetic number, because the mean of its divisors is an integer number (53223616).

Almost surely, 2206241481 is an apocalyptic number.

It is an amenable number.

206241481 is a deficient number, since it is larger than the sum of its proper divisors (6652983).

206241481 is an equidigital number, since it uses as much as digits as its factorization.

206241481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6652982.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 206241481 is about 14361.1100197721. The cubic root of 206241481 is about 590.8247404870.

The spelling of 206241481 in words is "two hundred six million, two hundred forty-one thousand, four hundred eighty-one".

Divisors: 1 31 6652951 206241481