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206452013 = 5313728433
BaseRepresentation
bin11000100111000…
…11010100101101
3112101110211220212
430103203110231
5410322431023
632252552205
75054545625
oct1423432455
9471424825
10206452013
11a659a4a9
1259182665
1333a05c71
141d5c1885
15131d0e78
hexc4e352d

206452013 has 8 divisors (see below), whose sum is σ = 211890168. Its totient is φ = 201071104.

The previous prime is 206452007. The next prime is 206452027. The reversal of 206452013 is 310254602.

206452013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 46758244 + 159693769 = 6838^2 + 12637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206452013 - 214 = 206435629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206452013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206452003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6956 + ... + 21477.

It is an arithmetic number, because the mean of its divisors is an integer number (26486271).

Almost surely, 2206452013 is an apocalyptic number.

It is an amenable number.

206452013 is a deficient number, since it is larger than the sum of its proper divisors (5438155).

206452013 is a wasteful number, since it uses less digits than its factorization.

206452013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28623.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 206452013 is about 14368.4380849138. The cubic root of 206452013 is about 591.0257107486.

The spelling of 206452013 in words is "two hundred six million, four hundred fifty-two thousand, thirteen".

Divisors: 1 53 137 7261 28433 1506949 3895321 206452013