20504222 has 8 divisors (see below), whose sum is σ = 30796176. Its totient is φ = 10238832.

The previous prime is 20504221. The next prime is 20504353. The reversal of 20504222 is 22240502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20504222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20504221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4583 + ... + 7874.

It is an arithmetic number, because the mean of its divisors is an integer number (3849522).

Almost surely, 2^20504222 is an apocalyptic number.

20504222 is a deficient number, since it is larger than the sum of its proper divisors (10291954).

20504222 is a wasteful number, since it uses less digits than its factorization.

20504222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13282.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 20504222 is about 4528.1587869685. The cubic root of 20504222 is about 273.7039710493.

Adding to 20504222 its reverse (22240502), we get a palindrome (42744724).

The spelling of 20504222 in words is "twenty million, five hundred four thousand, two hundred twenty-two".