30349247 has 4 divisors (see below), whose sum is σ = 30363696. Its totient is φ = 30334800.

The previous prime is 30349243. The next prime is 30349261. The reversal of 30349247 is 74294303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74294303 = 269 ⋅276187.

It is a cyclic number.

It is not a de Polignac number, because 30349247 - 2² = 30349243 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 (30349243) 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, 3398 + ... + 8499.

It is an arithmetic number, because the mean of its divisors is an integer number (7590924).

Almost surely, 2^30349247 is an apocalyptic number.

30349247 is a deficient number, since it is larger than the sum of its proper divisors (14449).

30349247 is a wasteful number, since it uses less digits than its factorization.

30349247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14448.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 30349247 is about 5509.0150662346. The cubic root of 30349247 is about 311.9243700917.

The spelling of 30349247 in words is "thirty million, three hundred forty-nine thousand, two hundred forty-seven".