22222320 has 40 divisors (see below), whose sum is σ = 68889936. Its totient is φ = 5925888.

The previous prime is 22222273. The next prime is 22222327. The reversal of 22222320 is 2322222.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22222320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46057 + ... + 46536.

Almost surely, 2^22222320 is an apocalyptic number.

22222320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222320 is an abundant number, since it is smaller than the sum of its proper divisors (46667616).

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

22222320 is a wasteful number, since it uses less digits than its factorization.

22222320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92609 (or 92603 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 22222320 is about 4714.0555787984. The cubic root of 22222320 is about 281.1446341115.

Adding to 22222320 its reverse (2322222), we get a palindrome (24544542).

The spelling of 22222320 in words is "twenty-two million, two hundred twenty-two thousand, three hundred twenty".