30530818 has 8 divisors (see below), whose sum is σ = 45837180. Its totient is φ = 15251760.

The previous prime is 30530813. The next prime is 30530839. The reversal of 30530818 is 81803503.

It can be written as a sum of positive squares in 2 ways, for example, as 19686969 + 10843849 = 4437^2 + 3293^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (30530813) 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, 3753 + ... + 8668.

Almost surely, 2^30530818 is an apocalyptic number.

30530818 is a deficient number, since it is larger than the sum of its proper divisors (15306362).

30530818 is a wasteful number, since it uses less digits than its factorization.

30530818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13652.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 30530818 is about 5525.4699347657. The cubic root of 30530818 is about 312.5451855728.

The spelling of 30530818 in words is "thirty million, five hundred thirty thousand, eight hundred eighteen".