30221429 has 4 divisors (see below), whose sum is σ = 34538784. Its totient is φ = 25904076.

The previous prime is 30221369. The next prime is 30221431. The reversal of 30221429 is 92412203.

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 30221429 - 2⁸ = 30221173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221459) 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 3 ways as a sum of consecutive naturals, for example, 2158667 + ... + 2158680.

It is an arithmetic number, because the mean of its divisors is an integer number (8634696).

Almost surely, 2^30221429 is an apocalyptic number.

It is an amenable number.

30221429 is a deficient number, since it is larger than the sum of its proper divisors (4317355).

30221429 is an equidigital number, since it uses as much as digits as its factorization.

30221429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4317354.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 30221429 is about 5497.4020227740. The cubic root of 30221429 is about 311.4858567231.

The spelling of 30221429 in words is "thirty million, two hundred twenty-one thousand, four hundred twenty-nine".