22320020 has 12 divisors (see below), whose sum is σ = 46872084. Its totient is φ = 8928000.

The previous prime is 22320019. The next prime is 22320059. The reversal of 22320020 is 2002322.

It can be written as a sum of positive squares in 2 ways, for example, as 8317456 + 14002564 = 2884^2 + 3742^2 .

It is a super-3 number, since 3×22320020³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22319983 and 22320010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557981 + ... + 558020.

It is an arithmetic number, because the mean of its divisors is an integer number (3906007).

Almost surely, 2^22320020 is an apocalyptic number.

22320020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22320020 is an abundant number, since it is smaller than the sum of its proper divisors (24552064).

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

22320020 is a wasteful number, since it uses less digits than its factorization.

22320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116010 (or 1116008 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 22320020 is about 4724.4068410754. The cubic root of 22320020 is about 281.5560474241.

Adding to 22320020 its reverse (2002322), we get a palindrome (24322342).

The spelling of 22320020 in words is "twenty-two million, three hundred twenty thousand, twenty".