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30512530927 = 269607186869
BaseRepresentation
bin11100011010101100…
…000100010111101111
32220202110201011122001
4130122230010113233
5444442201442202
622003421233131
72130062143054
oct343254042757
986673634561
1030512530927
1111a3858a10a
125ab67027a7
132b53616a38
14169654302b
15bd8b19d87
hex71ab045ef

30512530927 has 8 divisors (see below), whose sum is σ = 30676579200. Its totient is φ = 30348858144.

The previous prime is 30512530907. The next prime is 30512530933. The reversal of 30512530927 is 72903521503.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30512530927 is a prime.

It is a super-2 number, since 2×305125309272 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30512530907) by changing a digit.

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, 69849 + ... + 256717.

It is an arithmetic number, because the mean of its divisors is an integer number (3834572400).

Almost surely, 230512530927 is an apocalyptic number.

30512530927 is a deficient number, since it is larger than the sum of its proper divisors (164048273).

30512530927 is a wasteful number, since it uses less digits than its factorization.

30512530927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187745.

The product of its (nonzero) digits is 56700, while the sum is 37.

The spelling of 30512530927 in words is "thirty billion, five hundred twelve million, five hundred thirty thousand, nine hundred twenty-seven".

Divisors: 1 269 607 163283 186869 50267761 113429483 30512530927