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30564005 = 57383737
BaseRepresentation
bin111010010010…
…1111010100101
32010111210221012
41310211322211
530311022010
63011032005
7520534613
oct164457245
963453835
1030564005
111628620a
12a29b605
136441914
1440b86b3
152a3b005
hex1d25ea5

30564005 has 8 divisors (see below), whose sum is σ = 37179672. Its totient is φ = 24115968.

The previous prime is 30563963. The next prime is 30564007. The reversal of 30564005 is 50046503.

It can be written as a sum of positive squares in 4 ways, for example, as 1555009 + 29008996 = 1247^2 + 5386^2 .

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-30564005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30564007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41504 + ... + 42233.

It is an arithmetic number, because the mean of its divisors is an integer number (4647459).

Almost surely, 230564005 is an apocalyptic number.

It is an amenable number.

30564005 is a deficient number, since it is larger than the sum of its proper divisors (6615667).

30564005 is an equidigital number, since it uses as much as digits as its factorization.

30564005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83815.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 30564005 is about 5528.4722121034. The cubic root of 30564005 is about 312.6583901067.

The spelling of 30564005 in words is "thirty million, five hundred sixty-four thousand, five".

Divisors: 1 5 73 365 83737 418685 6112801 30564005