20220506 has 8 divisors (see below), whose sum is σ = 30395520. Its totient is φ = 10088668.

The previous prime is 20220467. The next prime is 20220517. The reversal of 20220506 is 60502202.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9596 + ... + 11511.

It is an arithmetic number, because the mean of its divisors is an integer number (3799440).

Almost surely, 2^20220506 is an apocalyptic number.

20220506 is a deficient number, since it is larger than the sum of its proper divisors (10175014).

20220506 is a wasteful number, since it uses less digits than its factorization.

20220506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21588.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20220506 is about 4496.7216947461. The cubic root of 20220506 is about 272.4356933799.

Adding to 20220506 its reverse (60502202), we get a palindrome (80722708).

The spelling of 20220506 in words is "twenty million, two hundred twenty thousand, five hundred six".