20650204 has 24 divisors (see below), whose sum is σ = 37956240. Its totient is φ = 9816576.

The previous prime is 20650193. The next prime is 20650213. The reversal of 20650204 is 40205602.

It is a congruent number.

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, 6444 + ... + 9100.

It is an arithmetic number, because the mean of its divisors is an integer number (1581510).

Almost surely, 2^20650204 is an apocalyptic number.

It is an amenable number.

20650204 is a deficient number, since it is larger than the sum of its proper divisors (17306036).

20650204 is a wasteful number, since it uses less digits than its factorization.

20650204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2757 (or 2755 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20650204 is about 4544.2495530065. The cubic root of 20650204 is about 274.3519904843.

Adding to 20650204 its reverse (40205602), we get a palindrome (60855806).

It can be divided in two parts, 2065020 and 4, that multiplied together give a triangular number (8260080 = T₄₀₆₄).

The spelling of 20650204 in words is "twenty million, six hundred fifty thousand, two hundred four".