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283881125 = 531121372
BaseRepresentation
bin10000111010111…
…010111010100101
3201210011122200202
4100322322322211
51040133144000
644100320245
710014643523
oct2072727245
9653148622
10283881125
11136275100
127b0a3085
1346a760c8
14299b9313
1519dc7dd5
hex10ebaea5

283881125 has 36 divisors (see below), whose sum is σ = 392282436. Its totient is φ = 204952000.

The previous prime is 283881121. The next prime is 283881127. The reversal of 283881125 is 521188382.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 6 ways, for example, as 69522244 + 214358881 = 8338^2 + 14641^2 .

It is not a de Polignac number, because 283881125 - 22 = 283881121 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (283881121) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2072057 + ... + 2072193.

Almost surely, 2283881125 is an apocalyptic number.

283881125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

283881125 is a deficient number, since it is larger than the sum of its proper divisors (108401311).

283881125 is an equidigital number, since it uses as much as digits as its factorization.

283881125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 153 counting only the distinct ones).

The product of its digits is 30720, while the sum is 38.

The square root of 283881125 is about 16848.7722104609. The cubic root of 283881125 is about 657.2221208625. Note that the first 3 decimals are identical.

The spelling of 283881125 in words is "two hundred eighty-three million, eight hundred eighty-one thousand, one hundred twenty-five".

Divisors: 1 5 11 25 55 121 125 137 275 605 685 1375 1507 3025 3425 7535 15125 16577 17125 18769 37675 82885 93845 188375 206459 414425 469225 1032295 2072125 2271049 2346125 5161475 11355245 25807375 56776225 283881125