30218349 has 24 divisors (see below), whose sum is σ = 47150400. Its totient is φ = 17164224.

The previous prime is 30218339. The next prime is 30218351. The reversal of 30218349 is 94381203.

It is not a de Polignac number, because 30218349 - 2⁸ = 30218093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30218329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28737 + ... + 29769.

It is an arithmetic number, because the mean of its divisors is an integer number (1964600).

Almost surely, 2^30218349 is an apocalyptic number.

It is an amenable number.

30218349 is a deficient number, since it is larger than the sum of its proper divisors (16932051).

30218349 is a wasteful number, since it uses less digits than its factorization.

30218349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249 (or 1242 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 30218349 is about 5497.1218833131. The cubic root of 30218349 is about 311.4752747281.

The spelling of 30218349 in words is "thirty million, two hundred eighteen thousand, three hundred forty-nine".