30634221 has 16 divisors (see below), whose sum is σ = 43775424. Its totient is φ = 18987264.

The previous prime is 30634211. The next prime is 30634243. The reversal of 30634221 is 12243603.

It is a happy number.

It is not a de Polignac number, because 30634221 - 2⁹ = 30633709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30634211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615 + ... + 7851.

It is an arithmetic number, because the mean of its divisors is an integer number (2735964).

Almost surely, 2^30634221 is an apocalyptic number.

It is an amenable number.

30634221 is a deficient number, since it is larger than the sum of its proper divisors (13141203).

30634221 is a wasteful number, since it uses less digits than its factorization.

30634221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7340.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 30634221 is about 5534.8189672292. The cubic root of 30634221 is about 312.8976348357.

Adding to 30634221 its reverse (12243603), we get a palindrome (42877824).

The spelling of 30634221 in words is "thirty million, six hundred thirty-four thousand, two hundred twenty-one".