30939944 has 32 divisors (see below), whose sum is σ = 66484800. Its totient is φ = 13223040.

The previous prime is 30939929. The next prime is 30939967. The reversal of 30939944 is 44993903.

It is a happy number.

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, 31379 + ... + 32349.

It is an arithmetic number, because the mean of its divisors is an integer number (2077650).

Almost surely, 2^30939944 is an apocalyptic number.

It is an amenable number.

30939944 is an abundant number, since it is smaller than the sum of its proper divisors (35544856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30939944 is a wasteful number, since it uses less digits than its factorization.

30939944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553 (or 1549 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 41.

The square root of 30939944 is about 5562.3685602448. The cubic root of 30939944 is about 313.9350752212.

The spelling of 30939944 in words is "thirty million, nine hundred thirty-nine thousand, nine hundred forty-four".