2222444400 has 240 divisors, whose sum is σ = 7848033408. Its totient is φ = 533120000.

The previous prime is 2222444381. The next prime is 2222444443. The reversal of 2222444400 is 44442222.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×2222444400² = 9878518222182720000, which contains 22 as substring.

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

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1332367 + ... + 1334033.

Almost surely, 2^2222444400 is an apocalyptic number.

2222444400 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 2222444400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3924016704).

2222444400 is an abundant number, since it is smaller than the sum of its proper divisors (5625589008).

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

2222444400 is a wasteful number, since it uses less digits than its factorization.

2222444400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800 (or 1789 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 2222444400 is about 47142.8085714035. The cubic root of 2222444400 is about 1304.9993687700. Note that the first 3 decimals are identical.

Adding to 2222444400 its reverse (44442222), we get a palindrome (2266886622).

It can be divided in two parts, 22 and 22444400, that added together give a palindrome (22444422).

The spelling of 2222444400 in words is "two billion, two hundred twenty-two million, four hundred forty-four thousand, four hundred".