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208053143 = 535696899
BaseRepresentation
bin11000110011010…
…10001110010111
3112111111012020222
430121222032113
5411230200033
632351144555
75104264634
oct1431521627
9474435228
10208053143
11a7493451
125981515b
133414698c
141d8bb18b
15133ea598
hexc66a397

208053143 has 8 divisors (see below), whose sum is σ = 212382000. Its totient is φ = 203739328.

The previous prime is 208053137. The next prime is 208053151. The reversal of 208053143 is 341350802.

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 208053143 - 224 = 191275927 is a prime.

It is a super-2 number, since 2×2080531432 = 86572220624356898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208053133) 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, 26708 + ... + 33606.

It is an arithmetic number, because the mean of its divisors is an integer number (26547750).

Almost surely, 2208053143 is an apocalyptic number.

208053143 is a deficient number, since it is larger than the sum of its proper divisors (4328857).

208053143 is an equidigital number, since it uses as much as digits as its factorization.

208053143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7521.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 208053143 is about 14424.0473862228. The cubic root of 208053143 is about 592.5496696181.

The spelling of 208053143 in words is "two hundred eight million, fifty-three thousand, one hundred forty-three".

Divisors: 1 53 569 6899 30157 365647 3925531 208053143