20222405 has 16 divisors (see below), whose sum is σ = 28940544. Its totient is φ = 13263360.

The previous prime is 20222383. The next prime is 20222407. The reversal of 20222405 is 50422202.

It is a de Polignac number, because none of the positive numbers 2^k-20222405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222407) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 11756 + ... + 13365.

It is an arithmetic number, because the mean of its divisors is an integer number (1808784).

Almost surely, 2^20222405 is an apocalyptic number.

It is an amenable number.

20222405 is a deficient number, since it is larger than the sum of its proper divisors (8718139).

20222405 is a wasteful number, since it uses less digits than its factorization.

20222405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25156.

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

The square root of 20222405 is about 4496.9328436169. The cubic root of 20222405 is about 272.4442216727. Note that the first 3 decimals are identical.

Adding to 20222405 its reverse (50422202), we get a palindrome (70644607).

The spelling of 20222405 in words is "twenty million, two hundred twenty-two thousand, four hundred five".