22441320 has 128 divisors (see below), whose sum is σ = 81648000. Its totient is φ = 5437440.

The previous prime is 22441297. The next prime is 22441333. The reversal of 22441320 is 2314422.

It is a super-2 number, since 2×22441320² = 1007225686684800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22441293 and 22441302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10936 + ... + 12824.

It is an arithmetic number, because the mean of its divisors is an integer number (637875).

Almost surely, 2^22441320 is an apocalyptic number.

22441320 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 22441320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40824000).

22441320 is an abundant number, since it is smaller than the sum of its proper divisors (59206680).

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

22441320 is a wasteful number, since it uses less digits than its factorization.

22441320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920 (or 1910 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 22441320 is about 4737.2270369912. The cubic root of 22441320 is about 282.0651728046.

Adding to 22441320 its reverse (2314422), we get a palindrome (24755742).

The spelling of 22441320 in words is "twenty-two million, four hundred forty-one thousand, three hundred twenty".