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30444744460 = 22513117095171
BaseRepresentation
bin11100010110101001…
…011110111100001100
32220120202011021002011
4130112221132330030
5444322323310320
621553000311004
72125310025634
oct342651367414
986522137064
1030444744460
1111a032a0139
125a97a72464
132b425718c0
14168b5396c4
15bd2bca05a
hex716a5ef0c

30444744460 has 24 divisors (see below), whose sum is σ = 68851961136. Its totient is φ = 11241136320.

The previous prime is 30444744401. The next prime is 30444744479. The reversal of 30444744460 is 6444744403.

It is a happy number.

It is a super-4 number, since 4×304447444604 (a number of 43 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58547326 + ... + 58547845.

It is an arithmetic number, because the mean of its divisors is an integer number (2868831714).

Almost surely, 230444744460 is an apocalyptic number.

It is an amenable number.

30444744460 is an abundant number, since it is smaller than the sum of its proper divisors (38407216676).

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

30444744460 is a wasteful number, since it uses less digits than its factorization.

30444744460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117095193 (or 117095191 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 40.

The spelling of 30444744460 in words is "thirty billion, four hundred forty-four million, seven hundred forty-four thousand, four hundred sixty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 117095171 234190342 468380684 585475855 1170951710 1522237223 2341903420 3044474446 6088948892 7611186115 15222372230 30444744460