30047473 has 2 divisors, whose sum is σ = 30047474. Its totient is φ = 30047472.

The previous prime is 30047471. The next prime is 30047533. The reversal of 30047473 is 37474003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29517489 + 529984 = 5433^2 + 728^2 .

It is a cyclic number.

It is not a de Polignac number, because 30047473 - 2¹ = 30047471 is a prime.

Together with 30047471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (30047471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15023736 + 15023737.

It is an arithmetic number, because the mean of its divisors is an integer number (15023737).

Almost surely, 2^30047473 is an apocalyptic number.

It is an amenable number.

30047473 is a deficient number, since it is larger than the sum of its proper divisors (1).

30047473 is an equidigital number, since it uses as much as digits as its factorization.

30047473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 30047473 is about 5481.5575341321. The cubic root of 30047473 is about 310.8870638276.

The spelling of 30047473 in words is "thirty million, forty-seven thousand, four hundred seventy-three".