30148947 has 12 divisors (see below), whose sum is σ = 43602000. Its totient is φ = 20074608.

The previous prime is 30148933. The next prime is 30148967. The reversal of 30148947 is 74984103.

It is a happy number.

It is not a de Polignac number, because 30148947 - 2⁷ = 30148819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30148967) 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 11 ways as a sum of consecutive naturals, for example, 8554 + ... + 11552.

It is an arithmetic number, because the mean of its divisors is an integer number (3633500).

Almost surely, 2^30148947 is an apocalyptic number.

30148947 is a deficient number, since it is larger than the sum of its proper divisors (13453053).

30148947 is a wasteful number, since it uses less digits than its factorization.

30148947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4122 (or 4119 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 30148947 is about 5490.8056785867. The cubic root of 30148947 is about 311.2366385129.

The spelling of 30148947 in words is "thirty million, one hundred forty-eight thousand, nine hundred forty-seven".