30621229 has 4 divisors (see below), whose sum is σ = 30646240. Its totient is φ = 30596220.

The previous prime is 30621223. The next prime is 30621263. The reversal of 30621229 is 92212603.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30621229 - 2³ = 30621221 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 (30621221) 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, 10569 + ... + 13150.

It is an arithmetic number, because the mean of its divisors is an integer number (7661560).

Almost surely, 2^30621229 is an apocalyptic number.

It is an amenable number.

30621229 is a deficient number, since it is larger than the sum of its proper divisors (25011).

30621229 is a wasteful number, since it uses less digits than its factorization.

30621229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25010.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 30621229 is about 5533.6451819754. The cubic root of 30621229 is about 312.8533951939.

The spelling of 30621229 in words is "thirty million, six hundred twenty-one thousand, two hundred twenty-nine".