222004240 has 40 divisors (see below), whose sum is σ = 517877568. Its totient is φ = 88506240.

The previous prime is 222004187. The next prime is 222004249. The reversal of 222004240 is 42400222.

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 (16).

It is not an unprimeable number, because it can be changed into a prime (222004249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20419 + ... + 29341.

Almost surely, 2^222004240 is an apocalyptic number.

222004240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222004240 is an abundant number, since it is smaller than the sum of its proper divisors (295873328).

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

222004240 is a wasteful number, since it uses less digits than its factorization.

222004240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9247 (or 9241 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 222004240 is about 14899.8067101557. The cubic root of 222004240 is about 605.5087494926.

Adding to 222004240 its reverse (42400222), we get a palindrome (264404462).

The spelling of 222004240 in words is "two hundred twenty-two million, four thousand, two hundred forty".