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30839458992 = 243642488729
BaseRepresentation
bin11100101110001011…
…001100110010110000
32221121020212211121220
4130232023030302300
51001124400141432
622100100345040
72141142035106
oct345613146260
987536784556
1030839458992
1112096085aa1
125b880a5180
132ba62824b4
1416c7b25c76
15c0769772c
hex72e2cccb0

30839458992 has 20 divisors (see below), whose sum is σ = 79668602520. Its totient is φ = 10279819648.

The previous prime is 30839458981. The next prime is 30839459017. The reversal of 30839458992 is 29985493803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321244317 + ... + 321244412.

It is an arithmetic number, because the mean of its divisors is an integer number (3983430126).

Almost surely, 230839458992 is an apocalyptic number.

It is an amenable number.

30839458992 is an abundant number, since it is smaller than the sum of its proper divisors (48829143528).

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

30839458992 is a wasteful number, since it uses less digits than its factorization.

30839458992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642488740 (or 642488734 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 60.

The spelling of 30839458992 in words is "thirty billion, eight hundred thirty-nine million, four hundred fifty-eight thousand, nine hundred ninety-two".

Divisors: 1 2 3 4 6 8 12 16 24 48 642488729 1284977458 1927466187 2569954916 3854932374 5139909832 7709864748 10279819664 15419729496 30839458992