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204068221 = 7171714859
BaseRepresentation
bin11000010100111…
…01010101111101
3112012222201222021
430022131111331
5404220140341
632125520141
75025360040
oct1412352575
9465881867
10204068221
11a5211525
1258413051
133337cc36
141d160c57
1512dae9d1
hexc29d57d

204068221 has 8 divisors (see below), whose sum is σ = 246939840. Its totient is φ = 164626368.

The previous prime is 204068201. The next prime is 204068231. The reversal of 204068221 is 122860402.

It is a happy number.

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

It is not a de Polignac number, because 204068221 - 27 = 204068093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204068201) 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, 857311 + ... + 857548.

It is an arithmetic number, because the mean of its divisors is an integer number (30867480).

Almost surely, 2204068221 is an apocalyptic number.

It is an amenable number.

204068221 is a deficient number, since it is larger than the sum of its proper divisors (42871619).

204068221 is a wasteful number, since it uses less digits than its factorization.

204068221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714883.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 204068221 is about 14285.2448701449. The cubic root of 204068221 is about 588.7421454559.

The spelling of 204068221 in words is "two hundred four million, sixty-eight thousand, two hundred twenty-one".

Divisors: 1 7 17 119 1714859 12004013 29152603 204068221