20434306 has 16 divisors (see below), whose sum is σ = 32903064. Its totient is φ = 9483264.

The previous prime is 20434259. The next prime is 20434319. The reversal of 20434306 is 60343402.

It can be written as a sum of positive squares in 4 ways, for example, as 17682025 + 2752281 = 4205^2 + 1659^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1635 + ... + 6598.

Almost surely, 2^20434306 is an apocalyptic number.

20434306 is a deficient number, since it is larger than the sum of its proper divisors (12468758).

20434306 is a wasteful number, since it uses less digits than its factorization.

20434306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8325.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 20434306 is about 4520.4320589961. The cubic root of 20434306 is about 273.3925217186.

Adding to 20434306 its reverse (60343402), we get a palindrome (80777708).

The spelling of 20434306 in words is "twenty million, four hundred thirty-four thousand, three hundred six".