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30420335255 = 521128834441
BaseRepresentation
bin11100010101001100…
…010111101010010111
32220112001020010221112
4130111030113222113
5444300101212010
621550325205235
72124562404032
oct342514275227
986461203845
1030420335255
11119a0539142
125a8b86081b
132b3a4a659b
1416881c4019
15bd09a7a05
hex715317a97

30420335255 has 8 divisors (see below), whose sum is σ = 36677410224. Its totient is φ = 24220929600.

The previous prime is 30420335227. The next prime is 30420335269. The reversal of 30420335255 is 55253302403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30420335255 - 214 = 30420318871 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 14416166 + ... + 14418275.

It is an arithmetic number, because the mean of its divisors is an integer number (4584676278).

Almost surely, 230420335255 is an apocalyptic number.

30420335255 is a deficient number, since it is larger than the sum of its proper divisors (6257074969).

30420335255 is a wasteful number, since it uses less digits than its factorization.

30420335255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28834657.

The product of its (nonzero) digits is 54000, while the sum is 32.

Adding to 30420335255 its reverse (55253302403), we get a palindrome (85673637658).

The spelling of 30420335255 in words is "thirty billion, four hundred twenty million, three hundred thirty-five thousand, two hundred fifty-five".

Divisors: 1 5 211 1055 28834441 144172205 6084067051 30420335255