306047 has 4 divisors (see below), whose sum is σ = 349776. Its totient is φ = 262320.

The previous prime is 306041. The next prime is 306049. The reversal of 306047 is 740603.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 306047 - 2¹⁰ = 305023 is a prime.

It is a plaindrome in base 8.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 306047.

It is not an unprimeable number, because it can be changed into a prime (306041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21854 + ... + 21867.

It is an arithmetic number, because the mean of its divisors is an integer number (87444).

2³⁰⁶⁰⁴⁷ is an apocalyptic number.

306047 is a deficient number, since it is larger than the sum of its proper divisors (43729).

306047 is an equidigital number, since it uses as much as digits as its factorization.

306047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43728.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 306047 is about 553.2151480211. The cubic root of 306047 is about 67.3900909100.

The spelling of 306047 in words is "three hundred six thousand, forty-seven".