222631444 has 24 divisors (see below), whose sum is σ = 464623488. Its totient is φ = 91264800.

The previous prime is 222631399. The next prime is 222631457. The reversal of 222631444 is 444136222.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 172207 + ... + 173494.

It is an arithmetic number, because the mean of its divisors is an integer number (19359312).

Almost surely, 2^222631444 is an apocalyptic number.

It is an amenable number.

222631444 is an abundant number, since it is smaller than the sum of its proper divisors (241992044).

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

222631444 is a wasteful number, since it uses less digits than its factorization.

222631444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345735 (or 345733 counting only the distinct ones).

The product of its digits is 9216, while the sum is 28.

The square root of 222631444 is about 14920.8392525354. The cubic root of 222631444 is about 606.0784389457.

Adding to 222631444 its reverse (444136222), we get a palindrome (666767666).

It can be divided in two parts, 2226 and 31444, that added together give a triangular number (33670 = T₂₅₉).

The spelling of 222631444 in words is "two hundred twenty-two million, six hundred thirty-one thousand, four hundred forty-four".