30530756 has 12 divisors (see below), whose sum is σ = 54437292. Its totient is φ = 14977248.

The previous prime is 30530741. The next prime is 30530771. The reversal of 30530756 is 65703503.

It is an interprime number because it is at equal distance from previous prime (30530741) and next prime (30530771).

It can be written as a sum of positive squares in 2 ways, for example, as 15476356 + 15054400 = 3934^2 + 3880^2 .

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 3 ways as a sum of consecutive naturals, for example, 71795 + ... + 72218.

It is an arithmetic number, because the mean of its divisors is an integer number (4536441).

Almost surely, 2^30530756 is an apocalyptic number.

It is an amenable number.

30530756 is a deficient number, since it is larger than the sum of its proper divisors (23906536).

30530756 is a wasteful number, since it uses less digits than its factorization.

30530756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144070 (or 144068 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 29.

The square root of 30530756 is about 5525.4643243804. The cubic root of 30530756 is about 312.5449740072.

The spelling of 30530756 in words is "thirty million, five hundred thirty thousand, seven hundred fifty-six".