222311680 has 144 divisors (see below), whose sum is σ = 566228880. Its totient is φ = 83492864.

The previous prime is 222311657. The next prime is 222311707. The reversal of 222311680 is 86113222.

It can be written as a sum of positive squares in 8 ways, for example, as 15872256 + 206439424 = 3984^2 + 14368^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1967304 + ... + 1967416.

It is an arithmetic number, because the mean of its divisors is an integer number (3932145).

Almost surely, 2^222311680 is an apocalyptic number.

222311680 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 222311680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283114440).

222311680 is an abundant number, since it is smaller than the sum of its proper divisors (343917200).

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

222311680 is a wasteful number, since it uses less digits than its factorization.

222311680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 222311680 is about 14910.1200531719. The cubic root of 222311680 is about 605.7881311585.

The spelling of 222311680 in words is "two hundred twenty-two million, three hundred eleven thousand, six hundred eighty".