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444321430220 = 2251031129116691
BaseRepresentation
bin1100111011100111001…
…11101111101011001100
31120110212112011022022102
412131303213233223030
524234432241231340
6540041330134232
744046461561513
oct6356347575314
91513775138272
10444321430220
11161487955978
1272142421378
1332b8caa44b5
141771067567a
15b857999215
hex67739efacc

444321430220 has 48 divisors (see below), whose sum is σ = 934759478016. Its totient is φ = 177408024000.

The previous prime is 444321430193. The next prime is 444321430229. The reversal of 444321430220 is 22034123444.

It is not an unprimeable number, because it can be changed into a prime (444321430229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26612075 + ... + 26628765.

It is an arithmetic number, because the mean of its divisors is an integer number (19474155792).

Almost surely, 2444321430220 is an apocalyptic number.

It is an amenable number.

444321430220 is an abundant number, since it is smaller than the sum of its proper divisors (490438047796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444321430220 is a wasteful number, since it uses less digits than its factorization.

444321430220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19022 (or 19020 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 444321430220 its reverse (22034123444), we get a palindrome (466355553664).

The spelling of 444321430220 in words is "four hundred forty-four billion, three hundred twenty-one million, four hundred thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 1031 1291 2062 2582 4124 5155 5164 6455 10310 12910 16691 20620 25820 33382 66764 83455 166910 333820 1331021 2662042 5324084 6655105 13310210 17208421 21548081 26620420 34416842 43096162 68833684 86042105 86192324 107740405 172084210 215480810 344168420 430961620 22216071511 44432143022 88864286044 111080357555 222160715110 444321430220