222066260 has 48 divisors (see below), whose sum is σ = 505216656. Its totient is φ = 81503232.

The previous prime is 222066227. The next prime is 222066263. The reversal of 222066260 is 62660222.

It can be written as a sum of positive squares in 8 ways, for example, as 770884 + 221295376 = 878^2 + 14876^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222066263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42512 + ... + 47448.

It is an arithmetic number, because the mean of its divisors is an integer number (10525347).

Almost surely, 2^222066260 is an apocalyptic number.

222066260 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 222066260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252608328).

222066260 is an abundant number, since it is smaller than the sum of its proper divisors (283150396).

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

222066260 is a wasteful number, since it uses less digits than its factorization.

222066260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5132 (or 5130 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 222066260 is about 14901.8877998729. The cubic root of 222066260 is about 605.5651300316.

The spelling of 222066260 in words is "two hundred twenty-two million, sixty-six thousand, two hundred sixty".