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200444261 = 3134011597
BaseRepresentation
bin10111111001010…
…00100101100101
3111222011121211112
423330220211211
5402303204021
631520114405
74652514413
oct1374504545
9458147745
10200444261
11a3166816
1257165a05
13326b1594
141c89a2b3
15128e5d5b
hexbf28965

200444261 has 8 divisors (see below), whose sum is σ = 201712344. Its totient is φ = 199180800.

The previous prime is 200444249. The next prime is 200444269. The reversal of 200444261 is 162444002.

It can be written as a sum of positive squares in 4 ways, for example, as 9728161 + 190716100 = 3119^2 + 13810^2 .

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-200444261 is a prime.

It is a super-2 number, since 2×2004442612 = 80355803535672242, 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 (200444269) 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, 124715 + ... + 126311.

It is an arithmetic number, because the mean of its divisors is an integer number (25214043).

Almost surely, 2200444261 is an apocalyptic number.

It is an amenable number.

200444261 is a deficient number, since it is larger than the sum of its proper divisors (1268083).

200444261 is a wasteful number, since it uses less digits than its factorization.

200444261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 200444261 is about 14157.8339091826. The cubic root of 200444261 is about 585.2362364374.

Adding to 200444261 its reverse (162444002), we get a palindrome (362888263).

The spelling of 200444261 in words is "two hundred million, four hundred forty-four thousand, two hundred sixty-one".

Divisors: 1 313 401 1597 125513 499861 640397 200444261