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208152029 = 17121710061
BaseRepresentation
bin11000110100000…
…10010111011101
3112111200012220102
430122002113131
5411241331104
632353230445
75105156141
oct1432022735
9474605812
10208152029
11a7550778
1259862425
133417c9a7
141d905221
1513419a1e
hexc6825dd

208152029 has 8 divisors (see below), whose sum is σ = 220599288. Its totient is φ = 195727360.

The previous prime is 208152019. The next prime is 208152067. The reversal of 208152029 is 920251802.

208152029 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 46607929 + 161544100 = 6827^2 + 12710^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-208152029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208151992 and 208152010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208152019) 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, 15659 + ... + 25719.

It is an arithmetic number, because the mean of its divisors is an integer number (27574911).

Almost surely, 2208152029 is an apocalyptic number.

It is an amenable number.

208152029 is a deficient number, since it is larger than the sum of its proper divisors (12447259).

208152029 is a wasteful number, since it uses less digits than its factorization.

208152029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11295.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 208152029 is about 14427.4747963738. The cubic root of 208152029 is about 592.6435327934.

The spelling of 208152029 in words is "two hundred eight million, one hundred fifty-two thousand, twenty-nine".

Divisors: 1 17 1217 10061 20689 171037 12244237 208152029