30220847 has 2 divisors, whose sum is σ = 30220848. Its totient is φ = 30220846.

The previous prime is 30220807. The next prime is 30220867. The reversal of 30220847 is 74802203.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30220847 - 2⁸ = 30220591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30220807) 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, 15110423 + 15110424.

It is an arithmetic number, because the mean of its divisors is an integer number (15110424).

Almost surely, 2^30220847 is an apocalyptic number.

30220847 is a deficient number, since it is larger than the sum of its proper divisors (1).

30220847 is an equidigital number, since it uses as much as digits as its factorization.

30220847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 30220847 is about 5497.3490884243. The cubic root of 30220847 is about 311.4838571935.

The spelling of 30220847 in words is "thirty million, two hundred twenty thousand, eight hundred forty-seven".