30938247 has 16 divisors (see below), whose sum is σ = 46310880. Its totient is φ = 20411136.

The previous prime is 30938221. The next prime is 30938309. The reversal of 30938247 is 74283903.

It is not a de Polignac number, because 30938247 - 2¹⁰ = 30937223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30938207) 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 15 ways as a sum of consecutive naturals, for example, 3288 + ... + 8525.

It is an arithmetic number, because the mean of its divisors is an integer number (2894430).

Almost surely, 2^30938247 is an apocalyptic number.

30938247 is a deficient number, since it is larger than the sum of its proper divisors (15372633).

30938247 is a wasteful number, since it uses less digits than its factorization.

30938247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11919 (or 11913 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 30938247 is about 5562.2160152227. The cubic root of 30938247 is about 313.9293355258.

The spelling of 30938247 in words is "thirty million, nine hundred thirty-eight thousand, two hundred forty-seven".