222278080 has 28 divisors (see below), whose sum is σ = 529300440. Its totient is φ = 88911104.

The previous prime is 222278059. The next prime is 222278107. The reversal of 222278080 is 80872222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346990 + ... + 347629.

Almost surely, 2^222278080 is an apocalyptic number.

222278080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222278080 is an abundant number, since it is smaller than the sum of its proper divisors (307022360).

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

222278080 is an equidigital number, since it uses as much as digits as its factorization.

222278080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694636 (or 694626 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 222278080 is about 14908.9932591037. The cubic root of 222278080 is about 605.7576101849.

The spelling of 222278080 in words is "two hundred twenty-two million, two hundred seventy-eight thousand, eighty".