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208450345 = 5172452357
BaseRepresentation
bin11000110110010…
…11001100101001
3112112020101010011
430123023030221
5411330402340
632403451521
75110540645
oct1433131451
9475211104
10208450345
11a7734914
1259986ba1
13342556cc
141d981c25
15134780ea
hexc6cb329

208450345 has 8 divisors (see below), whose sum is σ = 264854664. Its totient is φ = 156950784.

The previous prime is 208450343. The next prime is 208450351. The reversal of 208450345 is 543054802.

208450345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 120033936 + 88416409 = 10956^2 + 9403^2 .

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 208450345 - 21 = 208450343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208450343) 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, 1226094 + ... + 1226263.

It is an arithmetic number, because the mean of its divisors is an integer number (33106833).

Almost surely, 2208450345 is an apocalyptic number.

It is an amenable number.

208450345 is a deficient number, since it is larger than the sum of its proper divisors (56404319).

208450345 is a wasteful number, since it uses less digits than its factorization.

208450345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452379.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 208450345 is about 14437.8095637808. The cubic root of 208450345 is about 592.9265161131.

The spelling of 208450345 in words is "two hundred eight million, four hundred fifty thousand, three hundred forty-five".

Divisors: 1 5 17 85 2452357 12261785 41690069 208450345