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205213795 = 5400310253
BaseRepresentation
bin11000011101101…
…01000001100011
3112022010221101221
430032311001203
5410013320140
632210235511
75041200643
oct1416650143
9468127357
10205213795
11a5924186
1258885b97
13336914a7
141d37c523
151303914a
hexc3b5063

205213795 has 8 divisors (see below), whose sum is σ = 246342096. Its totient is φ = 164114016.

The previous prime is 205213793. The next prime is 205213819. The reversal of 205213795 is 597312502.

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 205213795 - 21 = 205213793 is a prime.

It is a super-2 number, since 2×2052137952 = 84225403316604050, which contains 22 as substring.

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 205213795.

It is not an unprimeable number, because it can be changed into a prime (205213793) 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, 14889 + ... + 25141.

It is an arithmetic number, because the mean of its divisors is an integer number (30792762).

Almost surely, 2205213795 is an apocalyptic number.

205213795 is a deficient number, since it is larger than the sum of its proper divisors (41128301).

205213795 is a wasteful number, since it uses less digits than its factorization.

205213795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14261.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 205213795 is about 14325.2851629557. The cubic root of 205213795 is about 589.8417606854.

The spelling of 205213795 in words is "two hundred five million, two hundred thirteen thousand, seven hundred ninety-five".

Divisors: 1 5 4003 10253 20015 51265 41042759 205213795