30020906 has 8 divisors (see below), whose sum is σ = 45769764. Its totient is φ = 14764320.

The previous prime is 30020873. The next prime is 30020933. The reversal of 30020906 is 60902003.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26429881 + 3591025 = 5141^2 + 1895^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 122915 + ... + 123158.

Almost surely, 2^30020906 is an apocalyptic number.

30020906 is a deficient number, since it is larger than the sum of its proper divisors (15748858).

30020906 is a wasteful number, since it uses less digits than its factorization.

30020906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246136.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 30020906 is about 5479.1336906485. The cubic root of 30020906 is about 310.7954113945.

Adding to 30020906 its reverse (60902003), we get a palindrome (90922909).

The spelling of 30020906 in words is "thirty million, twenty thousand, nine hundred six".