222997760 has 72 divisors (see below), whose sum is σ = 540842400. Its totient is φ = 88082432.

The previous prime is 222997717. The next prime is 222997807. The reversal of 222997760 is 67799222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105191 + ... + 107289.

It is an arithmetic number, because the mean of its divisors is an integer number (7511700).

Almost surely, 2^222997760 is an apocalyptic number.

222997760 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 222997760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270421200).

222997760 is an abundant number, since it is smaller than the sum of its proper divisors (317844640).

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

222997760 is an equidigital number, since it uses as much as digits as its factorization.

222997760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2203 (or 2189 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 222997760 is about 14933.1095221324. The cubic root of 222997760 is about 606.4106690038.

The spelling of 222997760 in words is "two hundred twenty-two million, nine hundred ninety-seven thousand, seven hundred sixty".