20706234 has 16 divisors (see below), whose sum is σ = 41495520. Its totient is φ = 6888240.

The previous prime is 20706209. The next prime is 20706239. The reversal of 20706234 is 43260702.

It is not an unprimeable number, because it can be changed into a prime (20706239) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 57 + ... + 6435.

It is an arithmetic number, because the mean of its divisors is an integer number (2593470).

Almost surely, 2^20706234 is an apocalyptic number.

20706234 is an abundant number, since it is smaller than the sum of its proper divisors (20789286).

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

20706234 is a wasteful number, since it uses less digits than its factorization.

20706234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6925.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 20706234 is about 4550.4103111698. The cubic root of 20706234 is about 274.5998986099.

Adding to 20706234 its reverse (43260702), we get a palindrome (63966936).

The spelling of 20706234 in words is "twenty million, seven hundred six thousand, two hundred thirty-four".