222450540 has 96 divisors (see below), whose sum is σ = 683557056. Its totient is φ = 53713920.

The previous prime is 222450523. The next prime is 222450583. The reversal of 222450540 is 45054222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 222450540.

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, 38650 + ... + 44030.

It is an arithmetic number, because the mean of its divisors is an integer number (7120386).

Almost surely, 2^222450540 is an apocalyptic number.

222450540 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 222450540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341778528).

222450540 is an abundant number, since it is smaller than the sum of its proper divisors (461106516).

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

222450540 is a wasteful number, since it uses less digits than its factorization.

222450540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5459 (or 5457 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 222450540 is about 14914.7758950646. The cubic root of 222450540 is about 605.9142337422.

The spelling of 222450540 in words is "two hundred twenty-two million, four hundred fifty thousand, five hundred forty".