30945806 has 8 divisors (see below), whose sum is σ = 46503720. Its totient is φ = 15444568.

The previous prime is 30945793. The next prime is 30945809. The reversal of 30945806 is 60854903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30945809) 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 in 3 ways as a sum of consecutive naturals, for example, 12776 + ... + 15003.

It is an arithmetic number, because the mean of its divisors is an integer number (5812965).

Almost surely, 2^30945806 is an apocalyptic number.

30945806 is a deficient number, since it is larger than the sum of its proper divisors (15557914).

30945806 is a wasteful number, since it uses less digits than its factorization.

30945806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28338.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 30945806 is about 5562.8954690880. The cubic root of 30945806 is about 313.9549004155.

The spelling of 30945806 in words is "thirty million, nine hundred forty-five thousand, eight hundred six".