22320456 has 64 divisors (see below), whose sum is σ = 59590080. Its totient is φ = 6942720.

The previous prime is 22320433. The next prime is 22320457. The reversal of 22320456 is 65402322.

It is a super-3 number, since 3×22320456³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (22320457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92496 + ... + 92736.

It is an arithmetic number, because the mean of its divisors is an integer number (931095).

Almost surely, 2^22320456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22320456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29795040).

22320456 is an abundant number, since it is smaller than the sum of its proper divisors (37269624).

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

22320456 is a wasteful number, since it uses less digits than its factorization.

22320456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 22320456 is about 4724.4529842089. The cubic root of 22320456 is about 281.5578807205.

Adding to 22320456 its reverse (65402322), we get a palindrome (87722778).

The spelling of 22320456 in words is "twenty-two million, three hundred twenty thousand, four hundred fifty-six".