30248891 has 2 divisors, whose sum is σ = 30248892. Its totient is φ = 30248890.

The previous prime is 30248879. The next prime is 30248927. The reversal of 30248891 is 19884203.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30248891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30248821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15124445 + 15124446.

It is an arithmetic number, because the mean of its divisors is an integer number (15124446).

Almost surely, 2^30248891 is an apocalyptic number.

30248891 is a deficient number, since it is larger than the sum of its proper divisors (1).

30248891 is an equidigital number, since it uses as much as digits as its factorization.

30248891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 30248891 is about 5499.8991808941. The cubic root of 30248891 is about 311.5801764955.

The spelling of 30248891 in words is "thirty million, two hundred forty-eight thousand, eight hundred ninety-one".