222420544 has 28 divisors (see below), whose sum is σ = 450762624. Its totient is φ = 108842624.

The previous prime is 222420521. The next prime is 222420547. The reversal of 222420544 is 445024222.

It is not an unprimeable number, because it can be changed into a prime (222420547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33964 + ... + 39979.

Almost surely, 2^222420544 is an apocalyptic number.

It is an amenable number.

222420544 is an abundant number, since it is smaller than the sum of its proper divisors (228342080).

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

222420544 is an equidigital number, since it uses as much as digits as its factorization.

222420544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74002 (or 73992 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 222420544 is about 14913.7702811864. The cubic root of 222420544 is about 605.8869979945.

Adding to 222420544 its reverse (445024222), we get a palindrome (667444766).

The spelling of 222420544 in words is "two hundred twenty-two million, four hundred twenty thousand, five hundred forty-four".