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30306495906 = 23210271163927
BaseRepresentation
bin11100001110011010…
…000110110110100010
32220020010000111201100
4130032122012312202
5444031430332111
621531141215230
72122010651631
oct341632066642
986203014640
1030306495906
1111942254a35
125a59701516
132b1ca2881b
14167702d518
15bc59bc756
hex70e686da2

30306495906 has 24 divisors (see below), whose sum is σ = 65670868224. Its totient is φ = 10101120120.

The previous prime is 30306495829. The next prime is 30306495913. The reversal of 30306495906 is 60959460303.

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 102915 + ... + 266841.

It is an arithmetic number, because the mean of its divisors is an integer number (2736286176).

Almost surely, 230306495906 is an apocalyptic number.

30306495906 is an abundant number, since it is smaller than the sum of its proper divisors (35364372318).

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

30306495906 is a wasteful number, since it uses less digits than its factorization.

30306495906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174206 (or 174203 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 45.

The spelling of 30306495906 in words is "thirty billion, three hundred six million, four hundred ninety-five thousand, nine hundred six".

Divisors: 1 2 3 6 9 18 10271 20542 30813 61626 92439 163927 184878 327854 491781 983562 1475343 2950686 1683694217 3367388434 5051082651 10102165302 15153247953 30306495906