30830745 has 32 divisors (see below), whose sum is σ = 54743040. Its totient is φ = 14690240.

The previous prime is 30830743. The next prime is 30830753. The reversal of 30830745 is 54703803.

It is not a de Polignac number, because 30830745 - 2¹ = 30830743 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30830743) 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 in 31 ways as a sum of consecutive naturals, for example, 8152 + ... + 11318.

It is an arithmetic number, because the mean of its divisors is an integer number (1710720).

Almost surely, 2^30830745 is an apocalyptic number.

It is an amenable number.

30830745 is a deficient number, since it is larger than the sum of its proper divisors (23912295).

30830745 is a wasteful number, since it uses less digits than its factorization.

30830745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3245.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 30830745 is about 5552.5440115320. The cubic root of 30830745 is about 313.5653071925.

The spelling of 30830745 in words is "thirty million, eight hundred thirty thousand, seven hundred forty-five".