222411540 has 96 divisors (see below), whose sum is σ = 673537536. Its totient is φ = 54512640.

The previous prime is 222411529. The next prime is 222411571. The reversal of 222411540 is 45114222.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 243685 + ... + 244595.

It is an arithmetic number, because the mean of its divisors is an integer number (7016016).

Almost surely, 2^222411540 is an apocalyptic number.

222411540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222411540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336768768).

222411540 is an abundant number, since it is smaller than the sum of its proper divisors (451125996).

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

222411540 is a wasteful number, since it uses less digits than its factorization.

222411540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249 (or 1247 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 222411540 is about 14913.4684094613. The cubic root of 222411540 is about 605.8788220709.

Adding to 222411540 its reverse (45114222), we get a palindrome (267525762).

The spelling of 222411540 in words is "two hundred twenty-two million, four hundred eleven thousand, five hundred forty".