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30600505312 = 251373558907
BaseRepresentation
bin11100011111111011…
…101010011111100000
32220222121020201210121
4130133323222133200
51000132212132222
622020243010024
72132211001126
oct343773523740
986877221717
1030600505312
1111a83207613
125b20069914
132b689099a0
1416a40c3916
15be16e65c7
hex71feea7e0

30600505312 has 24 divisors (see below), whose sum is σ = 64878956856. Its totient is φ = 14123309952.

The previous prime is 30600505297. The next prime is 30600505363. The reversal of 30600505312 is 21350500603.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36779038 + ... + 36779869.

It is an arithmetic number, because the mean of its divisors is an integer number (2703289869).

Almost surely, 230600505312 is an apocalyptic number.

30600505312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30600505312 is an abundant number, since it is smaller than the sum of its proper divisors (34278451544).

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

30600505312 is a wasteful number, since it uses less digits than its factorization.

30600505312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73558930 (or 73558922 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The spelling of 30600505312 in words is "thirty billion, six hundred million, five hundred five thousand, three hundred twelve".

Divisors: 1 2 4 8 13 16 26 32 52 104 208 416 73558907 147117814 294235628 588471256 956265791 1176942512 1912531582 2353885024 3825063164 7650126328 15300252656 30600505312