20220005 has 12 divisors (see below), whose sum is σ = 26275140. Its totient is φ = 14931072.

The previous prime is 20219951. The next prime is 20220007. The reversal of 20220005 is 50002202.

It can be written as a sum of positive squares in 6 ways, for example, as 2563201 + 17656804 = 1601^2 + 4202^2 .

It is not a de Polignac number, because 20220005 - 2¹⁴ = 20203621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11120 + ... + 12809.

It is an arithmetic number, because the mean of its divisors is an integer number (2189595).

Almost surely, 2^20220005 is an apocalyptic number.

It is an amenable number.

20220005 is a deficient number, since it is larger than the sum of its proper divisors (6055135).

20220005 is a wasteful number, since it uses less digits than its factorization.

20220005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23960 (or 23947 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 20220005 is about 4496.6659871509. The cubic root of 20220005 is about 272.4334433305.

Adding to 20220005 its reverse (50002202), we get a palindrome (70222207).

The spelling of 20220005 in words is "twenty million, two hundred twenty thousand, five".