30516808 has 24 divisors (see below), whose sum is σ = 66561750. Its totient is φ = 13078464.

The previous prime is 30516779. The next prime is 30516809. The reversal of 30516808 is 80861503.

It can be written as a sum of positive squares in only one way, i.e., 29354724 + 1162084 = 5418^2 + 1078^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30516808.

It is not an unprimeable number, because it can be changed into a prime (30516809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38533 + ... + 39316.

Almost surely, 2^30516808 is an apocalyptic number.

It is an amenable number.

30516808 is an abundant number, since it is smaller than the sum of its proper divisors (36044942).

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

30516808 is a wasteful number, since it uses less digits than its factorization.

30516808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77869 (or 77858 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 30516808 is about 5524.2020238221. The cubic root of 30516808 is about 312.4973712846.

The spelling of 30516808 in words is "thirty million, five hundred sixteen thousand, eight hundred eight".