222224004 has 18 divisors (see below), whose sum is σ = 561732990. Its totient is φ = 74074656.

The previous prime is 222224003. The next prime is 222224021. The reversal of 222224004 is 400422222.

It can be written as a sum of positive squares in only one way, i.e., 159971904 + 62252100 = 12648^2 + 7890^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is not an unprimeable number, because it can be changed into a prime (222224003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3086409 + ... + 3086480.

Almost surely, 2^222224004 is an apocalyptic number.

It is an amenable number.

222224004 is an abundant number, since it is smaller than the sum of its proper divisors (339508986).

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

222224004 is a wasteful number, since it uses less digits than its factorization.

222224004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6172899 (or 6172894 counting only the distinct ones).

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

The square root of 222224004 is about 14907.1796125223. The cubic root of 222224004 is about 605.7084831256.

Adding to 222224004 its reverse (400422222), we get a palindrome (622646226).

The spelling of 222224004 in words is "two hundred twenty-two million, two hundred twenty-four thousand, four".