22236020 has 12 divisors (see below), whose sum is σ = 46695684. Its totient is φ = 8894400.

The previous prime is 22236013. The next prime is 22236037. The reversal of 22236020 is 2063222.

It can be written as a sum of positive squares in 2 ways, for example, as 6822544 + 15413476 = 2612^2 + 3926^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22236020.

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 3 ways as a sum of consecutive naturals, for example, 555881 + ... + 555920.

It is an arithmetic number, because the mean of its divisors is an integer number (3891307).

Almost surely, 2^22236020 is an apocalyptic number.

22236020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22236020 is an abundant number, since it is smaller than the sum of its proper divisors (24459664).

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

22236020 is a wasteful number, since it uses less digits than its factorization.

22236020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111810 (or 1111808 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 22236020 is about 4715.5084561477. The cubic root of 22236020 is about 281.2023972110.

Adding to 22236020 its reverse (2063222), we get a palindrome (24299242).

The spelling of 22236020 in words is "twenty-two million, two hundred thirty-six thousand, twenty".