20201922 has 72 divisors (see below), whose sum is σ = 49245300. Its totient is φ = 5975424.

The previous prime is 20201917. The next prime is 20201939. The reversal of 20201922 is 22910202.

It can be written as a sum of positive squares in 6 ways, for example, as 7733961 + 12467961 = 2781^2 + 3531^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20201895 and 20201904.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 88104 + ... + 88332.

Almost surely, 2^20201922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20201922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24622650).

20201922 is an abundant number, since it is smaller than the sum of its proper divisors (29043378).

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

20201922 is a wasteful number, since it uses less digits than its factorization.

20201922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 20201922 is about 4494.6548254566. The cubic root of 20201922 is about 272.3522055783.

The spelling of 20201922 in words is "twenty million, two hundred one thousand, nine hundred twenty-two".