30605216 has 24 divisors (see below), whose sum is σ = 61884900. Its totient is φ = 14888448.

The previous prime is 30605213. The next prime is 30605227. The reversal of 30605216 is 61250603.

It can be written as a sum of positive squares in 2 ways, for example, as 30250000 + 355216 = 5500^2 + 596^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30605191 and 30605200.

It is not an unprimeable number, because it can be changed into a prime (30605213) 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, 11741 + ... + 14108.

Almost surely, 2^30605216 is an apocalyptic number.

It is an amenable number.

30605216 is an abundant number, since it is smaller than the sum of its proper divisors (31279684).

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

30605216 is a wasteful number, since it uses less digits than its factorization.

30605216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25896 (or 25888 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 30605216 is about 5532.1981164814. The cubic root of 30605216 is about 312.7988513900.

Adding to 30605216 its reverse (61250603), we get a palindrome (91855819).

The spelling of 30605216 in words is "thirty million, six hundred five thousand, two hundred sixteen".