30771056 has 20 divisors (see below), whose sum is σ = 62211792. Its totient is φ = 14716416.

The previous prime is 30771047. The next prime is 30771077. The reversal of 30771056 is 65017703.

It is a congruent number.

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, 41441 + ... + 42176.

Almost surely, 2^30771056 is an apocalyptic number.

It is an amenable number.

30771056 is an abundant number, since it is smaller than the sum of its proper divisors (31440736).

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

30771056 is a wasteful number, since it uses less digits than its factorization.

30771056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83648 (or 83642 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 29.

The square root of 30771056 is about 5547.1664838907. The cubic root of 30771056 is about 313.3628200207.

Adding to 30771056 its reverse (65017703), we get a palindrome (95788759).

The spelling of 30771056 in words is "thirty million, seven hundred seventy-one thousand, fifty-six".