22020500 has 24 divisors (see below), whose sum is σ = 48093864. Its totient is φ = 8808000.

The previous prime is 22020497. The next prime is 22020517. The reversal of 22020500 is 502022.

It can be written as a sum of positive squares in 4 ways, for example, as 749956 + 21270544 = 866^2 + 4612^2 .

It is a super-3 number, since 3×22020500³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21521 + ... + 22520.

It is an arithmetic number, because the mean of its divisors is an integer number (2003911).

Almost surely, 2^22020500 is an apocalyptic number.

22020500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22020500 is an abundant number, since it is smaller than the sum of its proper divisors (26073364).

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

22020500 is a wasteful number, since it uses less digits than its factorization.

22020500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44060 (or 44048 counting only the distinct ones).

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

The square root of 22020500 is about 4692.6005583258. The cubic root of 22020500 is about 280.2909390864.

Adding to 22020500 its reverse (502022), we get a palindrome (22522522).

The spelling of 22020500 in words is "twenty-two million, twenty thousand, five hundred".