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104208209 = 722765581
BaseRepresentation
bin1100011011000…
…01011101010001
321021002022210022
412031201131101
5203134130314
614201313225
72403520010
oct615413521
9237068708
10104208209
1153906196
122aa95815
1318788081
14dba8a77
15923678e
hex6361751

104208209 has 8 divisors (see below), whose sum is σ = 119621568. Its totient is φ = 88926480.

The previous prime is 104208197. The next prime is 104208211. The reversal of 104208209 is 902802401.

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 104208209 - 28 = 104207953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104208109) 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, 31202 + ... + 34379.

It is an arithmetic number, because the mean of its divisors is an integer number (14952696).

Almost surely, 2104208209 is an apocalyptic number.

It is an amenable number.

104208209 is a deficient number, since it is larger than the sum of its proper divisors (15413359).

104208209 is an equidigital number, since it uses as much as digits as its factorization.

104208209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65815.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 104208209 is about 10208.2422091171. The cubic root of 104208209 is about 470.5805546593.

The spelling of 104208209 in words is "one hundred four million, two hundred eight thousand, two hundred nine".

Divisors: 1 7 227 1589 65581 459067 14886887 104208209