30228893 has 2 divisors, whose sum is σ = 30228894. Its totient is φ = 30228892.

The previous prime is 30228883. The next prime is 30228899. The reversal of 30228893 is 39882203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26399044 + 3829849 = 5138^2 + 1957^2 .

It is an emirp because it is prime and its reverse (39882203) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30228893 - 2⁸ = 30228637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30228899) 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 as a sum of consecutive naturals, namely, 15114446 + 15114447.

It is an arithmetic number, because the mean of its divisors is an integer number (15114447).

Almost surely, 2^30228893 is an apocalyptic number.

It is an amenable number.

30228893 is a deficient number, since it is larger than the sum of its proper divisors (1).

30228893 is an equidigital number, since it uses as much as digits as its factorization.

30228893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 30228893 is about 5498.0808469865. The cubic root of 30228893 is about 311.5114979005.

The spelling of 30228893 in words is "thirty million, two hundred twenty-eight thousand, eight hundred ninety-three".