30222809 has 4 divisors (see below), whose sum is σ = 30735120. Its totient is φ = 29710500.

The previous prime is 30222791. The next prime is 30222811. The reversal of 30222809 is 90822203.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90822203 = 3631 ⋅25013.

It is a cyclic number.

It is not a de Polignac number, because 30222809 - 2¹⁶ = 30157273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30222859) 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, 256067 + ... + 256184.

It is an arithmetic number, because the mean of its divisors is an integer number (7683780).

Almost surely, 2^30222809 is an apocalyptic number.

It is an amenable number.

30222809 is a deficient number, since it is larger than the sum of its proper divisors (512311).

30222809 is an equidigital number, since it uses as much as digits as its factorization.

30222809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512310.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 30222809 is about 5497.5275351743. The cubic root of 30222809 is about 311.4905977734.

The spelling of 30222809 in words is "thirty million, two hundred twenty-two thousand, eight hundred nine".