30789740 has 48 divisors (see below), whose sum is σ = 66679200. Its totient is φ = 11937792.

The previous prime is 30789713. The next prime is 30789757. The reversal of 30789740 is 4798703.

It is a junction number, because it is equal to n+sod(n) for n = 30789694 and 30789703.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 114326 + ... + 114594.

It is an arithmetic number, because the mean of its divisors is an integer number (1389150).

Almost surely, 2^30789740 is an apocalyptic number.

It is an amenable number.

30789740 is an abundant number, since it is smaller than the sum of its proper divisors (35889460).

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

30789740 is a wasteful number, since it uses less digits than its factorization.

30789740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 30789740 is about 5548.8503313750. The cubic root of 30789740 is about 313.4262311942.

The spelling of 30789740 in words is "thirty million, seven hundred eighty-nine thousand, seven hundred forty".