20330308 has 6 divisors (see below), whose sum is σ = 35578046. Its totient is φ = 10165152.

The previous prime is 20330291. The next prime is 20330309. The reversal of 20330308 is 80303302.

It can be written as a sum of positive squares in only one way, i.e., 15303744 + 5026564 = 3912^2 + 2242^2 .

It is not an unprimeable number, because it can be changed into a prime (20330309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2541285 + ... + 2541292.

Almost surely, 2^20330308 is an apocalyptic number.

It is an amenable number.

20330308 is a deficient number, since it is larger than the sum of its proper divisors (15247738).

20330308 is a wasteful number, since it uses less digits than its factorization.

20330308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5082581 (or 5082579 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 20330308 is about 4508.9142817312. The cubic root of 20330308 is about 272.9279329602.

Subtracting from 20330308 its product of nonzero digits (432), we obtain a triangular number (20329876 = T₆₃₇₆).

The spelling of 20330308 in words is "twenty million, three hundred thirty thousand, three hundred eight".