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130581441 = 3222365063
BaseRepresentation
bin1111100100010…
…00001111000001
3100002201020001200
413302020033001
5231412101231
620542451413
73143631624
oct762101701
9302636050
10130581441
1167789851
1237893b69
1321090333
14134b1dbb
15b6e5be6
hex7c883c1

130581441 has 12 divisors (see below), whose sum is σ = 189466368. Its totient is φ = 86662584.

The previous prime is 130581439. The next prime is 130581449. The reversal of 130581441 is 144185031.

It is a happy number.

It is not a de Polignac number, because 130581441 - 21 = 130581439 is a prime.

It is a super-3 number, since 3×1305814413 (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (130581449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30525 + ... + 34538.

It is an arithmetic number, because the mean of its divisors is an integer number (15788864).

Almost surely, 2130581441 is an apocalyptic number.

It is an amenable number.

130581441 is a deficient number, since it is larger than the sum of its proper divisors (58884927).

130581441 is a wasteful number, since it uses less digits than its factorization.

130581441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65292 (or 65289 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 130581441 is about 11427.2236785669. The cubic root of 130581441 is about 507.3338254100. Note that the first 3 decimals are identical.

The spelling of 130581441 in words is "one hundred thirty million, five hundred eighty-one thousand, four hundred forty-one".

Divisors: 1 3 9 223 669 2007 65063 195189 585567 14509049 43527147 130581441