30443930 has 16 divisors (see below), whose sum is σ = 59781024. Its totient is φ = 11070480.

The previous prime is 30443911. The next prime is 30443971. The reversal of 30443930 is 3934403.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30443930.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 138272 + ... + 138491.

It is an arithmetic number, because the mean of its divisors is an integer number (3736314).

Almost surely, 2^30443930 is an apocalyptic number.

30443930 is a deficient number, since it is larger than the sum of its proper divisors (29337094).

30443930 is a wasteful number, since it uses less digits than its factorization.

30443930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276781.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 30443930 is about 5517.6018341305. The cubic root of 30443930 is about 312.2484119053.

The spelling of 30443930 in words is "thirty million, four hundred forty-three thousand, nine hundred thirty".