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207252641 = 672137337
BaseRepresentation
bin11000101101001…
…10110010100001
3112102222112011202
430112212302201
5411024041031
632322050545
75064422051
oct1426466241
9472875152
10207252641
11a6a96a82
12594a9a55
1333c264cb
141d74d561
15132dd2cb
hexc5a6ca1

207252641 has 12 divisors (see below), whose sum is σ = 212556708. Its totient is φ = 202067712.

The previous prime is 207252613. The next prime is 207252649. The reversal of 207252641 is 146252702.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 87984400 + 119268241 = 9380^2 + 10921^2 .

It is not a de Polignac number, because 207252641 - 214 = 207236257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207252649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 614825 + ... + 615161.

It is an arithmetic number, because the mean of its divisors is an integer number (17713059).

Almost surely, 2207252641 is an apocalyptic number.

It is an amenable number.

207252641 is a deficient number, since it is larger than the sum of its proper divisors (5304067).

207252641 is an equidigital number, since it uses as much as digits as its factorization.

207252641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 207252641 is about 14396.2717743171. The cubic root of 207252641 is about 591.7887312616.

The spelling of 207252641 in words is "two hundred seven million, two hundred fifty-two thousand, six hundred forty-one".

Divisors: 1 67 137 337 4489 9179 22579 46169 614993 1512793 3093323 207252641