30388266 has 12 divisors (see below), whose sum is σ = 65841282. Its totient is φ = 10129416.

The previous prime is 30388261. The next prime is 30388279. The reversal of 30388266 is 66288303.

It can be written as a sum of positive squares in only one way, i.e., 28998225 + 1390041 = 5385^2 + 1179^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30388266.

It is not an unprimeable number, because it can be changed into a prime (30388261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 844101 + ... + 844136.

Almost surely, 2^30388266 is an apocalyptic number.

30388266 is an abundant number, since it is smaller than the sum of its proper divisors (35453016).

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

30388266 is a wasteful number, since it uses less digits than its factorization.

30388266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688245 (or 1688242 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 30388266 is about 5512.5553058450. Note that the first 3 decimals coincide. The cubic root of 30388266 is about 312.0579897142.

The spelling of 30388266 in words is "thirty million, three hundred eighty-eight thousand, two hundred sixty-six".