22620020 has 24 divisors (see below), whose sum is σ = 48283368. Its totient is φ = 8899200.

The previous prime is 22620011. The next prime is 22620041. The reversal of 22620020 is 2002622.

It can be written as a sum of positive squares in 4 ways, for example, as 484 + 22619536 = 22^2 + 4756^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22619977 and 22620004.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8051 + ... + 10490.

It is an arithmetic number, because the mean of its divisors is an integer number (2011807).

Almost surely, 2^22620020 is an apocalyptic number.

22620020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22620020 is an abundant number, since it is smaller than the sum of its proper divisors (25663348).

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

22620020 is a wasteful number, since it uses less digits than its factorization.

22620020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18611 (or 18609 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 22620020 is about 4756.0508828228. The cubic root of 22620020 is about 282.8118882907.

Adding to 22620020 its reverse (2002622), we get a palindrome (24622642).

The spelling of 22620020 in words is "twenty-two million, six hundred twenty thousand, twenty".