20204270 has 16 divisors (see below), whose sum is σ = 36439200. Its totient is φ = 8065824.

The previous prime is 20204269. The next prime is 20204273. The reversal of 20204270 is 7240202.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20204273) by changing a digit.

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, 4304 + ... + 7676.

It is an arithmetic number, because the mean of its divisors is an integer number (2277450).

Almost surely, 2^20204270 is an apocalyptic number.

20204270 is a deficient number, since it is larger than the sum of its proper divisors (16234930).

20204270 is a wasteful number, since it uses less digits than its factorization.

20204270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3979.

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 20204270 is about 4494.9160170130. The cubic root of 20204270 is about 272.3627566900.

Adding to 20204270 its reverse (7240202), we get a palindrome (27444472).

The spelling of 20204270 in words is "twenty million, two hundred four thousand, two hundred seventy".