22103620 has 96 divisors (see below), whose sum is σ = 59867136. Its totient is φ = 6652800.

The previous prime is 22103617. The next prime is 22103623. The reversal of 22103620 is 2630122.

It is an interprime number because it is at equal distance from previous prime (22103617) and next prime (22103623).

It is a junction number, because it is equal to n+sod(n) for n = 22103594 and 22103603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22103623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47509 + ... + 47971.

It is an arithmetic number, because the mean of its divisors is an integer number (623616).

Almost surely, 2^22103620 is an apocalyptic number.

22103620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22103620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29933568).

22103620 is an abundant number, since it is smaller than the sum of its proper divisors (37763516).

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

22103620 is a wasteful number, since it uses less digits than its factorization.

22103620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 22103620 is about 4701.4487128969. The cubic root of 22103620 is about 280.6431643674.

Adding to 22103620 its reverse (2630122), we get a palindrome (24733742).

The spelling of 22103620 in words is "twenty-two million, one hundred three thousand, six hundred twenty".