20222685 has 48 divisors (see below), whose sum is σ = 41019264. Its totient is φ = 9023616.

The previous prime is 20222621. The next prime is 20222689. The reversal of 20222685 is 58622202.

It is not a de Polignac number, because 20222685 - 2⁶ = 20222621 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222689) 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 47 ways as a sum of consecutive naturals, for example, 12799 + ... + 14291.

It is an arithmetic number, because the mean of its divisors is an integer number (854568).

Almost surely, 2^20222685 is an apocalyptic number.

It is an amenable number.

20222685 is an abundant number, since it is smaller than the sum of its proper divisors (20796579).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20222685 is a wasteful number, since it uses less digits than its factorization.

20222685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554 (or 1551 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 20222685 is about 4496.9639758397. The cubic root of 20222685 is about 272.4454790904.

Adding to 20222685 its reverse (58622202), we get a palindrome (78844887).

The spelling of 20222685 in words is "twenty million, two hundred twenty-two thousand, six hundred eighty-five".