22342320 has 480 divisors, whose sum is σ = 103993344. Its totient is φ = 4147200.

The previous prime is 22342319. The next prime is 22342357. The reversal of 22342320 is 2324322.

22342320 is a `hidden beast` number, since 2 + 2 + 342 + 320 = 666.

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

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 22342293 and 22342302.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 720705 + ... + 720735.

Almost surely, 2^22342320 is an apocalyptic number.

22342320 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 22342320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51996672).

22342320 is an abundant number, since it is smaller than the sum of its proper divisors (81651024).

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

22342320 is a wasteful number, since it uses less digits than its factorization.

22342320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 22342320 is about 4726.7663365138. The cubic root of 22342320 is about 281.6497840485.

Adding to 22342320 its reverse (2324322), we get a palindrome (24666642).

It can be divided in two parts, 2234 and 2320, that added together give a palindrome (4554).

The spelling of 22342320 in words is "twenty-two million, three hundred forty-two thousand, three hundred twenty".