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420080205 = 3528005347
BaseRepresentation
bin11001000010011…
…110101001001101
31002021110021201010
4121002132221031
51330020031310
6105403435433
713260423426
oct3102365115
91067407633
10420080205
111a6140526
12b8825b79
136905238c
143db1064d
1526d2d320
hex1909ea4d

420080205 has 8 divisors (see below), whose sum is σ = 672128352. Its totient is φ = 224042768.

The previous prime is 420080191. The next prime is 420080231. The reversal of 420080205 is 502080024.

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 420080205 - 27 = 420080077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14002659 + ... + 14002688.

It is an arithmetic number, because the mean of its divisors is an integer number (84016044).

Almost surely, 2420080205 is an apocalyptic number.

It is an amenable number.

420080205 is a deficient number, since it is larger than the sum of its proper divisors (252048147).

420080205 is a wasteful number, since it uses less digits than its factorization.

420080205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28005355.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 420080205 is about 20495.8582401421. The cubic root of 420080205 is about 748.9349059266.

The spelling of 420080205 in words is "four hundred twenty million, eighty thousand, two hundred five".

Divisors: 1 3 5 15 28005347 84016041 140026735 420080205