30439772 has 12 divisors (see below), whose sum is σ = 58112376. Its totient is φ = 13836240.

The previous prime is 30439769. The next prime is 30439777. The reversal of 30439772 is 27793403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30439777) 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 3 ways as a sum of consecutive naturals, for example, 345863 + ... + 345950.

It is an arithmetic number, because the mean of its divisors is an integer number (4842698).

Almost surely, 2^30439772 is an apocalyptic number.

It is an amenable number.

30439772 is a deficient number, since it is larger than the sum of its proper divisors (27672604).

30439772 is a wasteful number, since it uses less digits than its factorization.

30439772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691828 (or 691826 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 30439772 is about 5517.2250271309. The cubic root of 30439772 is about 312.2341957380.

The spelling of 30439772 in words is "thirty million, four hundred thirty-nine thousand, seven hundred seventy-two".