305743047 has 8 divisors (see below), whose sum is σ = 407827056. Its totient is φ = 203743872.

The previous prime is 305743021. The next prime is 305743051. The reversal of 305743047 is 740347503.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 305743047 - 2⁸ = 305742791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 305742999 and 305743017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305743057) 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 7 ways as a sum of consecutive naturals, for example, 12258 + ... + 27599.

It is an arithmetic number, because the mean of its divisors is an integer number (50978382).

Almost surely, 2^305743047 is an apocalyptic number.

305743047 is a deficient number, since it is larger than the sum of its proper divisors (102084009).

305743047 is a wasteful number, since it uses less digits than its factorization.

305743047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42417.

The product of its (nonzero) digits is 35280, while the sum is 33.

The square root of 305743047 is about 17485.5096294046. The cubic root of 305743047 is about 673.6777385289.

The spelling of 305743047 in words is "three hundred five million, seven hundred forty-three thousand, forty-seven".