24222222 has 48 divisors (see below), whose sum is σ = 54931968. Its totient is φ = 7704720.

The previous prime is 24222199. The next prime is 24222223. The reversal of 24222222 is 22222242.

It is a happy number.

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

24222222 is a modest number, since divided by 22222 gives 242 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 24222195 and 24222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24222223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46053 + ... + 46575.

It is an arithmetic number, because the mean of its divisors is an integer number (1144416).

Almost surely, 2^24222222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 24222222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27465984).

24222222 is an abundant number, since it is smaller than the sum of its proper divisors (30709746).

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

24222222 is a wasteful number, since it uses less digits than its factorization.

24222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 642 counting only the distinct ones).

The product of its digits is 512, while the sum is 18.

The square root of 24222222 is about 4921.6076641683. The cubic root of 24222222 is about 289.3374569670.

Adding to 24222222 its reverse (22222242), we get a palindrome (46444464).

It can be divided in two parts, 2 and 4222222, that added together give a palindrome (4222224).

The spelling of 24222222 in words is "twenty-four million, two hundred twenty-two thousand, two hundred twenty-two".