30470221 has 8 divisors (see below), whose sum is σ = 31109120. Its totient is φ = 29837808.

The previous prime is 30470201. The next prime is 30470227. The reversal of 30470221 is 12207403.

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

It is a cyclic number.

It is not a de Polignac number, because 30470221 - 2⁵ = 30470189 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 (30470227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8515 + ... + 11551.

It is an arithmetic number, because the mean of its divisors is an integer number (3888640).

Almost surely, 2^30470221 is an apocalyptic number.

It is an amenable number.

30470221 is a deficient number, since it is larger than the sum of its proper divisors (638899).

30470221 is a wasteful number, since it uses less digits than its factorization.

30470221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3243.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 30470221 is about 5519.9837862081. The cubic root of 30470221 is about 312.3382706607.

Adding to 30470221 its reverse (12207403), we get a palindrome (42677624).

The spelling of 30470221 in words is "thirty million, four hundred seventy thousand, two hundred twenty-one".