222424032400 has 60 divisors (see below), whose sum is σ = 547407284004. Its totient is φ = 86799616000.

The previous prime is 222424032379. The next prime is 222424032401. The reversal of 222424032400 is 4230424222.

It can be written as a sum of positive squares in 6 ways, for example, as 91678150656 + 130745881744 = 302784^2 + 361588^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (222424032401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6764821 + ... + 6797620.

Almost surely, 2^222424032400 is an apocalyptic number.

222424032400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222424032400 is an abundant number, since it is smaller than the sum of its proper divisors (324983251604).

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

222424032400 is a wasteful number, since it uses less digits than its factorization.

222424032400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13562500 (or 13562489 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 222424032400 its reverse (4230424222), we get a palindrome (226654456622).

The spelling of 222424032400 in words is "two hundred twenty-two billion, four hundred twenty-four million, thirty-two thousand, four hundred".