Search a number
-
+
208068849 = 3223118761
BaseRepresentation
bin11000110011011…
…10000011110001
3112111111222210200
430121232003301
5411231200344
632351345413
75104361502
oct1431560361
9474458720
10208068849
11a74a422a
1259822269
1334150b81
141d8c2ba9
1513400069
hexc66e0f1

208068849 has 6 divisors (see below), whose sum is σ = 300543906. Its totient is φ = 138712560.

The previous prime is 208068811. The next prime is 208068853. The reversal of 208068849 is 948860802.

It is a happy number.

208068849 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 only one way, i.e., 206928225 + 1140624 = 14385^2 + 1068^2 .

It is not a de Polignac number, because 208068849 - 29 = 208068337 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (208068149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11559372 + ... + 11559389.

It is an arithmetic number, because the mean of its divisors is an integer number (50090651).

Almost surely, 2208068849 is an apocalyptic number.

It is an amenable number.

208068849 is a deficient number, since it is larger than the sum of its proper divisors (92475057).

208068849 is a wasteful number, since it uses less digits than its factorization.

208068849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23118767 (or 23118764 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 208068849 is about 14424.5918139821. The cubic root of 208068849 is about 592.5645798326.

The spelling of 208068849 in words is "two hundred eight million, sixty-eight thousand, eight hundred forty-nine".

Divisors: 1 3 9 23118761 69356283 208068849