20430268 has 12 divisors (see below), whose sum is σ = 36986040. Its totient is φ = 9862832.

The previous prime is 20430251. The next prime is 20430307. The reversal of 20430268 is 86203402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87946 + ... + 88177.

It is an arithmetic number, because the mean of its divisors is an integer number (3082170).

Almost surely, 2^20430268 is an apocalyptic number.

It is an amenable number.

20430268 is a deficient number, since it is larger than the sum of its proper divisors (16555772).

20430268 is a wasteful number, since it uses less digits than its factorization.

20430268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176156 (or 176154 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 20430268 is about 4519.9853982065. The cubic root of 20430268 is about 273.3745122703.

The spelling of 20430268 in words is "twenty million, four hundred thirty thousand, two hundred sixty-eight".