222416280 has 160 divisors (see below), whose sum is σ = 787129200. Its totient is φ = 56173824.

The previous prime is 222416273. The next prime is 222416297. The reversal of 222416280 is 82614222.

It is a happy number.

222416280 is a `hidden beast` number, since 222 + 416 + 28 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 39 ways as a sum of consecutive naturals, for example, 59754 + ... + 63366.

Almost surely, 2^222416280 is an apocalyptic number.

222416280 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 222416280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393564600).

222416280 is an abundant number, since it is smaller than the sum of its proper divisors (564712920).

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

222416280 is a wasteful number, since it uses less digits than its factorization.

222416280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3655 (or 3642 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 222416280 is about 14913.6273253692. The cubic root of 222416280 is about 605.8831261719.

The spelling of 222416280 in words is "two hundred twenty-two million, four hundred sixteen thousand, two hundred eighty".