22102320 has 160 divisors (see below), whose sum is σ = 74638080. Its totient is φ = 5391360.

The previous prime is 22102279. The next prime is 22102331. The reversal of 22102320 is 2320122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 22102296 and 22102305.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168655 + ... + 168785.

It is an arithmetic number, because the mean of its divisors is an integer number (466488).

Almost surely, 2^22102320 is an apocalyptic number.

22102320 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 22102320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37319040).

22102320 is an abundant number, since it is smaller than the sum of its proper divisors (52535760).

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

22102320 is a wasteful number, since it uses less digits than its factorization.

22102320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 22102320 is about 4701.3104556070. The cubic root of 22102320 is about 280.6376623536.

Adding to 22102320 its reverse (2320122), we get a palindrome (24422442).

It can be divided in two parts, 22102 and 320, that added together give a palindrome (22422).

The spelling of 22102320 in words is "twenty-two million, one hundred two thousand, three hundred twenty".