30385221 has 8 divisors (see below), whose sum is σ = 41002080. Its totient is φ = 20012592.

The previous prime is 30385213. The next prime is 30385247. The reversal of 30385221 is 12258303.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30385221 - 2³ = 30385213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30385191 and 30385200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30385211) 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 7 ways as a sum of consecutive naturals, for example, 60766 + ... + 61263.

It is an arithmetic number, because the mean of its divisors is an integer number (5125260).

Almost surely, 2^30385221 is an apocalyptic number.

It is an amenable number.

30385221 is a deficient number, since it is larger than the sum of its proper divisors (10616859).

30385221 is a wasteful number, since it uses less digits than its factorization.

30385221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122115.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 30385221 is about 5512.2791112207. The cubic root of 30385221 is about 312.0475663014.

The spelling of 30385221 in words is "thirty million, three hundred eighty-five thousand, two hundred twenty-one".