30750056 has 32 divisors (see below), whose sum is σ = 61322400. Its totient is φ = 14414400.

The previous prime is 30750053. The next prime is 30750073. The reversal of 30750056 is 65005703.

It is not an unprimeable number, because it can be changed into a prime (30750053) 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 7 ways as a sum of consecutive naturals, for example, 14351 + ... + 16353.

It is an arithmetic number, because the mean of its divisors is an integer number (1916325).

Almost surely, 2^30750056 is an apocalyptic number.

It is an amenable number.

30750056 is a deficient number, since it is larger than the sum of its proper divisors (30572344).

30750056 is a wasteful number, since it uses less digits than its factorization.

30750056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129 (or 2125 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 30750056 is about 5545.2733025524. The cubic root of 30750056 is about 313.2915179851.

Adding to 30750056 its reverse (65005703), we get a palindrome (95755759).

The spelling of 30750056 in words is "thirty million, seven hundred fifty thousand, fifty-six".