305005047 has 16 divisors (see below), whose sum is σ = 429131520. Its totient is φ = 192306752.

The previous prime is 305005033. The next prime is 305005067. The reversal of 305005047 is 740500503.

It is a cyclic number.

It is not a de Polignac number, because 305005047 - 2⁴ = 305005031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305005067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18693 + ... + 30974.

It is an arithmetic number, because the mean of its divisors is an integer number (26820720).

Almost surely, 2^305005047 is an apocalyptic number.

305005047 is a deficient number, since it is larger than the sum of its proper divisors (124126473).

305005047 is a wasteful number, since it uses less digits than its factorization.

305005047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49782.

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 305005047 is about 17464.3936911649. The cubic root of 305005047 is about 673.1352625967.

The spelling of 305005047 in words is "three hundred five million, five thousand, forty-seven".