222816280 has 64 divisors (see below), whose sum is σ = 549180000. Its totient is φ = 80984064.

The previous prime is 222816241. The next prime is 222816281. The reversal of 222816280 is 82618222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222816281) 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 15 ways as a sum of consecutive naturals, for example, 14071 + ... + 25369.

Almost surely, 2^222816280 is an apocalyptic number.

222816280 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 222816280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274590000).

222816280 is an abundant number, since it is smaller than the sum of its proper divisors (326363720).

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

222816280 is a wasteful number, since it uses less digits than its factorization.

222816280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11356 (or 11352 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 222816280 is about 14927.0318549938. The cubic root of 222816280 is about 606.2461213483.

It can be divided in two parts, 22281 and 6280, that added together give a 4-th power (28561 = 13⁴).

The spelling of 222816280 in words is "two hundred twenty-two million, eight hundred sixteen thousand, two hundred eighty".