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208306054 = 21191910303
BaseRepresentation
bin11000110101001…
…11111110000110
3112111222001012001
430122213332012
5411311243204
632400415514
75106400165
oct1432477606
9474861161
10208306054
11a7646470
125991759a
1334204b28
141d9453dc
151344a4a4
hexc6a7f86

208306054 has 16 divisors (see below), whose sum is σ = 341268480. Its totient is φ = 94572360.

The previous prime is 208306031. The next prime is 208306069. The reversal of 208306054 is 450603802.

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, 15067 + ... + 25369.

It is an arithmetic number, because the mean of its divisors is an integer number (21329280).

Almost surely, 2208306054 is an apocalyptic number.

208306054 is a deficient number, since it is larger than the sum of its proper divisors (132962426).

208306054 is a wasteful number, since it uses less digits than its factorization.

208306054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11235.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 208306054 is about 14432.8117149778. The cubic root of 208306054 is about 592.7896750381.

Adding to 208306054 its reverse (450603802), we get a palindrome (658909856).

The spelling of 208306054 in words is "two hundred eight million, three hundred six thousand, fifty-four".

Divisors: 1 2 11 22 919 1838 10109 10303 20218 20606 113333 226666 9468457 18936914 104153027 208306054