222742436 has 54 divisors (see below), whose sum is σ = 462628530. Its totient is φ = 93553152.

The previous prime is 222742427. The next prime is 222742439. The reversal of 222742436 is 634247222.

222742436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 37945600 + 184796836 = 6160^2 + 13594^2 .

It is a super-2 number, since 2×222742436² = 99228385590428192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222742439) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1971116 + ... + 1971228.

It is an arithmetic number, because the mean of its divisors is an integer number (8567195).

Almost surely, 2^222742436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222742436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231314265).

222742436 is an abundant number, since it is smaller than the sum of its proper divisors (239886094).

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

222742436 is a wasteful number, since it uses less digits than its factorization.

222742436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 211 counting only the distinct ones).

The product of its digits is 32256, while the sum is 32.

The square root of 222742436 is about 14924.5581509135. The cubic root of 222742436 is about 606.1791415253.

Adding to 222742436 its reverse (634247222), we get a palindrome (856989658).

The spelling of 222742436 in words is "two hundred twenty-two million, seven hundred forty-two thousand, four hundred thirty-six".