30788897 has 2 divisors, whose sum is σ = 30788898. Its totient is φ = 30788896.

The previous prime is 30788893. The next prime is 30788939. The reversal of 30788897 is 79888703.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21492496 + 9296401 = 4636^2 + 3049^2 .

It is a cyclic number.

It is not a de Polignac number, because 30788897 - 2² = 30788893 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30788893) 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, 15394448 + 15394449.

It is an arithmetic number, because the mean of its divisors is an integer number (15394449).

Almost surely, 2^30788897 is an apocalyptic number.

It is an amenable number.

30788897 is a deficient number, since it is larger than the sum of its proper divisors (1).

30788897 is an equidigital number, since it uses as much as digits as its factorization.

30788897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 30788897 is about 5548.7743691738. The cubic root of 30788897 is about 313.4233707097.

The spelling of 30788897 in words is "thirty million, seven hundred eighty-eight thousand, eight hundred ninety-seven".