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30604220047 = 36438400829
BaseRepresentation
bin11100100000001001…
…110101011010001111
32220222212020110110101
4130200021311122033
51000134140020142
622020454351531
72132254402222
oct344011653217
986885213411
1030604220047
1111a85314545
125b2135b5a7
132b6960a75b
1416a47ad5b9
15be1bcc0b7
hex72027568f

30604220047 has 4 divisors (see below), whose sum is σ = 30612624520. Its totient is φ = 30595815576.

The previous prime is 30604220041. The next prime is 30604220099. The reversal of 30604220047 is 74002240603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74002240603 = 247001299603.

It is a cyclic number.

It is not a de Polignac number, because 30604220047 - 227 = 30470002319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30604219997 and 30604220024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30604220041) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4196772 + ... + 4204057.

It is an arithmetic number, because the mean of its divisors is an integer number (7653156130).

Almost surely, 230604220047 is an apocalyptic number.

30604220047 is a deficient number, since it is larger than the sum of its proper divisors (8404473).

30604220047 is an equidigital number, since it uses as much as digits as its factorization.

30604220047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8404472.

The product of its (nonzero) digits is 8064, while the sum is 28.

The spelling of 30604220047 in words is "thirty billion, six hundred four million, two hundred twenty thousand, forty-seven".

Divisors: 1 3643 8400829 30604220047