30768916 has 12 divisors (see below), whose sum is σ = 54583732. Its totient is φ = 15173568.

The previous prime is 30768911. The next prime is 30768931. The reversal of 30768916 is 61986703.

It can be written as a sum of positive squares in 2 ways, for example, as 8678916 + 22090000 = 2946^2 + 4700^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30768911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52395 + ... + 52978.

Almost surely, 2^30768916 is an apocalyptic number.

It is an amenable number.

30768916 is a deficient number, since it is larger than the sum of its proper divisors (23814816).

30768916 is a wasteful number, since it uses less digits than its factorization.

30768916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105450 (or 105448 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 30768916 is about 5546.9735892647. The cubic root of 30768916 is about 313.3555554885.

It can be divided in two parts, 30768 and 916, that added together give a square (31684 = 178²).

The spelling of 30768916 in words is "thirty million, seven hundred sixty-eight thousand, nine hundred sixteen".