30375047 has 4 divisors (see below), whose sum is σ = 30544920. Its totient is φ = 30205176.

The previous prime is 30375041. The next prime is 30375049. The reversal of 30375047 is 74057303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74057303 = 307 ⋅241229.

It is not a de Polignac number, because 30375047 - 2⁸ = 30374791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30375041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84668 + ... + 85025.

It is an arithmetic number, because the mean of its divisors is an integer number (7636230).

Almost surely, 2^30375047 is an apocalyptic number.

30375047 is a deficient number, since it is larger than the sum of its proper divisors (169873).

30375047 is a wasteful number, since it uses less digits than its factorization.

30375047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169872.

The product of its (nonzero) digits is 8820, while the sum is 29.

The square root of 30375047 is about 5511.3561851871. The cubic root of 30375047 is about 312.0127343860.

The spelling of 30375047 in words is "thirty million, three hundred seventy-five thousand, forty-seven".