20500246 has 16 divisors (see below), whose sum is σ = 33925248. Its totient is φ = 9230400.

The previous prime is 20500231. The next prime is 20500247. The reversal of 20500246 is 64200502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20500247) 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, 8550 + ... + 10681.

It is an arithmetic number, because the mean of its divisors is an integer number (2120328).

Almost surely, 2^20500246 is an apocalyptic number.

20500246 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20500246 is a deficient number, since it is larger than the sum of its proper divisors (13425002).

20500246 is a wasteful number, since it uses less digits than its factorization.

20500246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19287.

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

The square root of 20500246 is about 4527.7197351426. The cubic root of 20500246 is about 273.6862784763.

Adding to 20500246 its reverse (64200502), we get a palindrome (84700748).

The spelling of 20500246 in words is "twenty million, five hundred thousand, two hundred forty-six".