222020240 has 40 divisors (see below), whose sum is σ = 555907128. Its totient is φ = 81976320.

The previous prime is 222020237. The next prime is 222020243. The reversal of 222020240 is 42020222.

It is an interprime number because it is at equal distance from previous prime (222020237) and next prime (222020243).

It can be written as a sum of positive squares in 4 ways, for example, as 9560464 + 212459776 = 3092^2 + 14576^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (222020243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105701 + ... + 107780.

Almost surely, 2^222020240 is an apocalyptic number.

222020240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222020240 is an abundant number, since it is smaller than the sum of its proper divisors (333886888).

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

222020240 is a wasteful number, since it uses less digits than its factorization.

222020240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213507 (or 213501 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 222020240 is about 14900.3436201988. The cubic root of 222020240 is about 605.5232956220.

Adding to 222020240 its reverse (42020222), we get a palindrome (264040462).

The spelling of 222020240 in words is "two hundred twenty-two million, twenty thousand, two hundred forty".