22003120 has 20 divisors (see below), whose sum is σ = 51157440. Its totient is φ = 8801216.

The previous prime is 22003103. The next prime is 22003129. The reversal of 22003120 is 2130022.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 22003097 and 22003106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22003129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137440 + ... + 137599.

It is an arithmetic number, because the mean of its divisors is an integer number (2557872).

Almost surely, 2^22003120 is an apocalyptic number.

22003120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22003120 is an abundant number, since it is smaller than the sum of its proper divisors (29154320).

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

22003120 is a wasteful number, since it uses less digits than its factorization.

22003120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275052 (or 275046 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 22003120 is about 4690.7483411498. The cubic root of 22003120 is about 280.2171784435.

Adding to 22003120 its reverse (2130022), we get a palindrome (24133142).

The spelling of 22003120 in words is "twenty-two million, three thousand, one hundred twenty".