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207080261 = 4716572659
BaseRepresentation
bin11000101011111…
…00101101000101
3112102122202201022
430111330231011
5411003032021
632314240525
75063103353
oct1425745505
9472582638
10207080261
11a6989513
1259426145
1333b95bcb
141d7067d3
15132a71ab
hexc57cb45

207080261 has 8 divisors (see below), whose sum is σ = 211693440. Its totient is φ = 202475808.

The previous prime is 207080257. The next prime is 207080287. The reversal of 207080261 is 162080702.

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 207080261 - 22 = 207080257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 207080261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207086261) 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, 76550 + ... + 79208.

It is an arithmetic number, because the mean of its divisors is an integer number (26461680).

Almost surely, 2207080261 is an apocalyptic number.

It is an amenable number.

207080261 is a deficient number, since it is larger than the sum of its proper divisors (4613179).

207080261 is a wasteful number, since it uses less digits than its factorization.

207080261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4363.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 207080261 is about 14390.2835621818. The cubic root of 207080261 is about 591.6246145960.

The spelling of 207080261 in words is "two hundred seven million, eighty thousand, two hundred sixty-one".

Divisors: 1 47 1657 2659 77879 124973 4405963 207080261