22030320 has 160 divisors (see below), whose sum is σ = 76995072. Its totient is φ = 5170176.

The previous prime is 22030301. The next prime is 22030321. The reversal of 22030320 is 2303022.

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 = 22030296 and 22030305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22030321) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 71607 + ... + 71913.

Almost surely, 2^22030320 is an apocalyptic number.

22030320 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 22030320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38497536).

22030320 is an abundant number, since it is smaller than the sum of its proper divisors (54964752).

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

22030320 is a wasteful number, since it uses less digits than its factorization.

22030320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 22030320 is about 4693.6467698369. The cubic root of 22030320 is about 280.3325979644.

Adding to 22030320 its reverse (2303022), we get a palindrome (24333342).

The spelling of 22030320 in words is "twenty-two million, thirty thousand, three hundred twenty".