30428243 has 2 divisors, whose sum is σ = 30428244. Its totient is φ = 30428242.

The previous prime is 30428239. The next prime is 30428269. The reversal of 30428243 is 34282403.

It is an a-pointer prime, because the next prime (30428269) can be obtained adding 30428243 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30428243 - 2² = 30428239 is a prime.

It is not a weakly prime, because it can be changed into another prime (30428213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15214121 + 15214122.

It is an arithmetic number, because the mean of its divisors is an integer number (15214122).

Almost surely, 2^30428243 is an apocalyptic number.

30428243 is a deficient number, since it is larger than the sum of its proper divisors (1).

30428243 is an equidigital number, since it uses as much as digits as its factorization.

30428243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 30428243 is about 5516.1801094598. The cubic root of 30428243 is about 312.1947714107.

The spelling of 30428243 in words is "thirty million, four hundred twenty-eight thousand, two hundred forty-three".