30994405 has 16 divisors (see below), whose sum is σ = 40716144. Its totient is φ = 22510080.

The previous prime is 30994393. The next prime is 30994427. The reversal of 30994405 is 50449903.

It can be written as a sum of positive squares in 8 ways, for example, as 20124196 + 10870209 = 4486^2 + 3297^2 .

It is not a de Polignac number, because 30994405 - 2⁷ = 30994277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 57 + ... + 7873.

It is an arithmetic number, because the mean of its divisors is an integer number (2544759).

Almost surely, 2^30994405 is an apocalyptic number.

It is an amenable number.

30994405 is a deficient number, since it is larger than the sum of its proper divisors (9721739).

30994405 is a wasteful number, since it uses less digits than its factorization.

30994405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7896.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 30994405 is about 5567.2618943247. The cubic root of 30994405 is about 314.1191651507.

The spelling of 30994405 in words is "thirty million, nine hundred ninety-four thousand, four hundred five".