34830721 has 2 divisors, whose sum is σ = 34830722. Its totient is φ = 34830720.

The previous prime is 34830703. The next prime is 34830751. The reversal of 34830721 is 12703843.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22657600 + 12173121 = 4760^2 + 3489^2 .

It is a cyclic number.

It is not a de Polignac number, because 34830721 - 2¹⁵ = 34797953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 34830721.

It is not a weakly prime, because it can be changed into another prime (34830751) 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, 17415360 + 17415361.

It is an arithmetic number, because the mean of its divisors is an integer number (17415361).

Almost surely, 2^34830721 is an apocalyptic number.

It is an amenable number.

34830721 is a deficient number, since it is larger than the sum of its proper divisors (1).

34830721 is an equidigital number, since it uses as much as digits as its factorization.

34830721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 34830721 is about 5901.7557557052. The cubic root of 34830721 is about 326.5784234553.

The spelling of 34830721 in words is "thirty-four million, eight hundred thirty thousand, seven hundred twenty-one".