222381860 has 24 divisors (see below), whose sum is σ = 483106680. Its totient is φ = 85885184.

The previous prime is 222381857. The next prime is 222381893. The reversal of 222381860 is 68183222.

It can be written as a sum of positive squares in 4 ways, for example, as 92467456 + 129914404 = 9616^2 + 11398^2 .

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, 191129 + ... + 192288.

It is an arithmetic number, because the mean of its divisors is an integer number (20129445).

Almost surely, 2^222381860 is an apocalyptic number.

222381860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222381860 is an abundant number, since it is smaller than the sum of its proper divisors (260724820).

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

222381860 is a wasteful number, since it uses less digits than its factorization.

222381860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383455 (or 383453 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 222381860 is about 14912.4733025746. The cubic root of 222381860 is about 605.8518701070.

The spelling of 222381860 in words is "two hundred twenty-two million, three hundred eighty-one thousand, eight hundred sixty".