305279047 has 8 divisors (see below), whose sum is σ = 323431056. Its totient is φ = 287148672.

The previous prime is 305279017. The next prime is 305279057. The reversal of 305279047 is 740972503.

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 2^k-305279047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 305278997 and 305279015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305279017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30528 + ... + 39274.

It is an arithmetic number, because the mean of its divisors is an integer number (40428882).

Almost surely, 2^305279047 is an apocalyptic number.

305279047 is a deficient number, since it is larger than the sum of its proper divisors (18152009).

305279047 is a wasteful number, since it uses less digits than its factorization.

305279047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10817.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 305279047 is about 17472.2364624567. The cubic root of 305279047 is about 673.3367716769.

The spelling of 305279047 in words is "three hundred five million, two hundred seventy-nine thousand, forty-seven".