30928516 has 6 divisors (see below), whose sum is σ = 54124910. Its totient is φ = 15464256.

The previous prime is 30928507. The next prime is 30928517. The reversal of 30928516 is 61582903.

It can be written as a sum of positive squares in only one way, i.e., 30206016 + 722500 = 5496^2 + 850^2 .

It is not an unprimeable number, because it can be changed into a prime (30928517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3866061 + ... + 3866068.

Almost surely, 2^30928516 is an apocalyptic number.

It is an amenable number.

30928516 is a deficient number, since it is larger than the sum of its proper divisors (23196394).

30928516 is a wasteful number, since it uses less digits than its factorization.

30928516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7732133 (or 7732131 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 30928516 is about 5561.3412051411. The cubic root of 30928516 is about 313.8964186996.

The spelling of 30928516 in words is "thirty million, nine hundred twenty-eight thousand, five hundred sixteen".